Straddled vehicle

ABSTRACT

A straddled vehicle, including a cross member connecting right and left seat frames, a seat above the cross member and right and left seat frames, left and right side covers, a rear fender, an intake passage formed below the seat, between the left and right side covers and above the rear fender, an air cleaner located in a front part of the intake passage, left and right inlet ports located in a rear part of the intake passage, first and second fastening portions respectively fastening the right and left side cover to the right and left seat frames or to the rear fender. In a rear view of the vehicle, the cross member is convex upward and does not overlap the right or left inlet port, and the first and second fastening portions are located outside the intake passage, or are located inside the intake passage but does not overlap the right or left inlet port.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Japanese Patent Application No.2020-021321 filed Feb. 12, 2020, the disclosure of which is herebyincorporated herein by reference in its entirety for all purposes.

TECHNICAL FIELD

This invention relates to a straddled vehicle provided with an aircleaner.

BACKGROUND ART

Japanese Unexamined Patent Publication No. 2002-115612A discloses atwo-wheeled vehicle. Hereinunder, numerals in Japanese Unexamined PatentPublication No. 2002-115612A are expressed in parentheses. Thetwo-wheeled vehicle (1) includes an air cleaner (35) and an intakepassage (50). The air cleaner (35) is located in a front part of theintake passage (50). The intake passage (50) extends rearward from theair cleaner (35).

The two-wheeled vehicle (1) includes a seat (19), a right side cover(40), a left side cover (40), and a rear fender (22). The intake passage(50) is formed with the seat (19), the right side cover (40), the leftside cover (40), and the rear fender (22). The seat (19) constitutes atop wall of the intake passage (50). The right side cover (40)constitutes a right wall of the intake passage (50). The left side cover(40) constitutes a left wall of the intake passage (50). The rear fender(22) constitutes a bottom wall of the intake passage (50).

The two-wheeled vehicle (1) includes a right inlet port (40b) and a leftinlet port (40b). The right inlet port (40b) and the left inlet port(40b) are located in a rear part of the intake passage (50). The rightinlet port (40b) and the left inlet port (40b) are opened rearward. Theright inlet port (40b) is formed in the right side cover (40). The leftinlet port (40b) is formed in the left side cover (40).

The intake passage (50) takes in air from the outside of the two-wheeledvehicle (1) through the right inlet port (40b) and the left inlet port(40b). The air cleaner (35) intakes air within the intake passage (50).

More specifically, in the intake passage (50), air flows from the rightinlet port (40b) or the left inlet port (40b) to the air cleaner (35).In other words, in the intake passage (50), air flows from the rear partof the intake passage (50) to the front part of the intake passage (50).Airflow in the intake passage (50) is directed forward.

The two-wheeled vehicle (1) includes a right seat frame (12), a leftseat frame (12), a right bolt (45), and a left bolt (45). The right bolt(45) joins the right seat frame (12) with the right side cover (44). Theleft bolt (45) joins the left seat frame (12) with the left side cover(44).

The right seat frame (12) and the left seat frame (12) are eachpartially located inside of the intake passage (50). The right bolt (45)and the left bolt (45) are located inside of the intake passage (50).The right bolt (45) overlaps the right inlet port (40b) in the rear viewof the vehicle. The left bolt (45) overlaps the left inlet port (40b) inthe rear view of the vehicle.

The two-wheeled vehicle (1) includes a cross member (8). The crossmember (8) connects the right seat frame (12) with the left seat frame(12). Specifically, the cross member (8) couples a front end of theright seat frame (12) with a front end of the left seat frame (12). Thecross member (8) is located more forward than the air cleaner (35).Accordingly, the cross member (8) is located outside of the intakepassage (50). The cross member (8) is located more forward than theintake passage (50).

The two-wheeled vehicle (1) includes no frame member that is locatedinside of the intake passage (50) and connects the right seat frame (12)with the left seat frame (12). In other words, the two-wheeled vehicle(1) includes no frame member that is located more rearward than the aircleaner (35) and couples the right seat frame (12) with the left seatframe (12).

The right bolt (45) is located inside of the intake passage (50), andoverlaps the right inlet port (40b) in the rear view of the vehicle.Accordingly, the right bolt (45) causes obstruction to the airflow inthe intake passage (50). Likewise, the left bolt (45) is located insideof the intake passage (50), and overlaps the left inlet port (40b) inthe rear view of the vehicle. Accordingly, the left bolt (45) causesobstruction to the airflow in the intake passage (50). As a result, airis hard to flow smoothly in the intake passage (50). The difficulty ofsmooth airflow in the intake passage makes it hard to ensure an intakeair amount of the air cleaner (35).

The right seat frame (12) and the left seat frame (12) are not connectedby the frame member located more rearward than the air cleaner (35).This causes relatively low rigidity of a body frame.

SUMMARY OF INVENTION

The present invention has been made regarding the state of the art notedabove, and its one object is to provide a straddled vehicle thatachieves smooth airflow in an intake passage as well as enhancedrigidity of a body frame.

Inventors herein have studied on a support configuration that suitablysupports a right side cover and a left side cover and is unlikely to beobstruction to airflow in the intake passage. The inventors herein alsohave studied on a reinforcement configuration that suitably reinforces aright seat frame and a left seat frame and is unlikely to be obstructionto airflow in the intake passage.

Based on the above study, this invention provides the followingconstruction. A straddled vehicle, according to this invention,includes:

a body frame including a right seat frame located rightward of a vehiclecenter plane that passes through the center of the straddled vehicle andis perpendicular to a transverse direction of the vehicle, a left seatframe located leftward of the vehicle center plane, and a cross memberlocated between the right seat frame and the left seat frame andconfigured to connect the right seat frame with the left seat frame;

a seat located above the right seat frame, the left seat frame, and thecross member;

a right side cover located rightward of the right seat frame;

a left side cover located leftward of the left seat frame;

a rear fender including a part located below the right seat frame, theleft seat frame, and the cross member;

an intake passage formed below the seat, leftward of the right sidecover, rightward of the left side cover, and above the rear fender, andextending in a longitudinal direction of the vehicle;

an air cleaner located in a front part of the intake passage;

a left inlet port located in a rear part of the intake passage andleftward of the vehicle center plane, opened rearward, and communicatingthe intake passage and an outside of the straddled vehicle;

a right inlet port located in the rear part of the intake passage andrightward of the vehicle center plane, opened rearward, andcommunicating the intake passage and the outside of the straddledvehicle;

a first fastening portion configured to fasten the right side cover toeither the right seat frame or the rear fender; and

a second fastening portion configured to fasten the left side cover toeither the left seat frame or the rear fender, wherein

the cross member is located more rearward than the air cleaner and moreforward than the right inlet port and the left inlet port,

the cross member has a shape curved to be convex upward in rear view ofthe vehicle,

the cross member is located at a position not overlapping the rightinlet port or the left inlet port in the rear view of the vehicle,

the first fastening portion is located at least either at a position notoverlapping the right inlet port or the left inlet port in the rear viewof the vehicle or at a position outside of the intake passage, and

the second fastening portion is located at least either at a positionnot overlapping the right inlet port or the left inlet port in the rearview of the vehicle or at a position outside of the intake passage.

The straddled vehicle includes the cross member. The cross memberconnects the right seat frame with the left seat frame. The cross memberis located more rearward than the air cleaner. Accordingly, the crossmember can reinforce the right seat frame and the left seat frame atappropriate positions. This can enhance rigidity of a body frameconveniently.

In the intake passage, air flows from the right inlet port and the leftinlet port to the air cleaner. The intake passage is formed below theseat, leftward of the right side cover, rightward of the left sidecover, and above the rear fender. The intake passage extends in thelongitudinal direction of the vehicle. The air cleaner is located in thefront part of the intake passage. The right inlet port and the leftinlet port are located in the rear part of the intake passage. The rightinlet port and the left inlet port communicate the intake passage andthe outside of the straddled vehicle. Consequently, air flows throughthe right inlet port and the left inlet port, thereby flowing into theintake passage. Air flows forward in the intake passage.

The right inlet port and the left inlet port are opened rearward.Consequently, air flows into the intake passage from a position rearwardof the right inlet port and the left inlet port. This causes air to flowforward when air flows into the intake passage. As a result, air canflow smoothly into the intake passage and air can flow smoothly in theintake passage.

The right inlet port is located rightward of the vehicle center plane.The left inlet port is located leftward of the vehicle center plane.Consequently, the right inlet port and the left inlet port enableefficient introduction of air into the intake passage.

The cross member is located between the right seat frame and the leftseat frame. The cross member is located below the seat. The cross memberis located above part of the rear fender. The cross member is locatedmore forward than the right inlet port and the left inlet port.Accordingly, the cross member is located inside of the intake passage.Here, the cross member has the shape curved to be convex upward in therear view of the vehicle. This can suppress obstruction to airflow inthe intake passage by the cross member. Moreover, the cross member islocated at a position not overlapping the right inlet port or the leftinlet port in the rear view of the vehicle. This can further suppressobstruction to airflow in the intake passage by the cross member.

The straddled vehicle includes the first fastening portion. The firstfastening portion fastens the right side cover to either the right seatframe or the rear fender. This can support the right side coversuitably. The straddled vehicle includes the second fastening portion.The second fastening portion fastens the left side cover to either theleft seat frame or the rear fender. This can support the left side coversuitably.

The first fastening portion is located at least either at a position notoverlapping the right inlet port or the left inlet port in the rear viewof the vehicle or at a position outside of the intake passage. Likewise,the second fastening portion is located at least either at a positionnot overlapping the right inlet port or the left inlet port in the rearview of the vehicle or at a position outside of the intake passage.Here, the position not overlapping the right inlet port or the leftinlet port in the rear view of the vehicle may be outside or inside ofthe intake passage. Moreover, the position outside of the intake passagemay be a position overlapping or not overlapping the right inlet port orthe left inlet port in the rear view of the vehicle. Consequently, thefirst fastening portion and the second fastening portion are eachlocated at either of positions a, b, and c as under:

Position a: a position inside of the intake passage and not overlappingthe right inlet port or the left inlet port in the rear view of thevehicle:

Position b: a position outside of the intake passage and not overlappingthe right inlet port or the left inlet port in the rear view of thevehicle:

Position c: a position outside of the intake passage and overlapping theright inlet port or the left port in the rear view of the vehicle:

If the first fastening portion is located at the position a, the firstfastening portion is unlikely to be obstruction to the airflow in theintake passage. If the first fastening portion is located at either theposition b or c, the first fastening portion is not obstruction to theairflow in the intake passage. Likewise, if the second fastening portionis located at the position a, the second fastening portion is unlikelyto be obstruction to the airflow in the intake passage. If the secondfastening portion is located at either the position b or c, the secondfastening portion is not obstruction to the airflow in the intakepassage.

As described above, the cross member, the first fastening portion, andthe second fastening portion are unlikely to be the obstruction to theairflow in the intake passage, achieving smooth airflow in the intakepassage.

In summary, the straddled vehicle described above achieves smoothairflow in the intake passage as well as enhanced rigidity of the bodyframe. Specifically, the cross member can reinforce the right seat frameand the left seat frame suitably without significantly obstructing theairflow in the intake passage. In addition, the first fastening portionand the second fastening portion can support the right side cover andthe left side cover suitably without significantly obstructing theairflow in the intake passage.

It is preferred in the straddled vehicle described above that an area ofthe cross member in the rear view of the vehicle is smaller than an areaof the cross member in plan view of the vehicle. The area of the crossmember in the rear view of the vehicle is relatively small. This obtainsa relatively enlarged flow path cross sectional area of the intakepassage. This can further suppress obstruction to airflow in the intakepassage by the cross member. The area of the cross member in the planview of the vehicle is relatively large. This can easily secure strengthof the cross member. Accordingly, the cross member can enhance rigidityof the body frame easily.

It is preferred in the straddled vehicle described above that the crossmember contacts the seat at a position higher than the right seat frameand the left seat frame. A relatively large region formed below thecross member is usable as the intake passage. This can further suppressobstruction to airflow in the intake passage by the cross member.

It is preferred in the straddled vehicle described above that the crossmember includes a right hole extending in the longitudinal direction ofthe vehicle, and a left hole extending in the longitudinal direction ofthe vehicle. According to this embodiment, inside of the intake passage,the right hole and the left hole each extend substantially parallel tothe intake passage. This allows air to pass through the right hole andthe left hole smoothly. That is, a further enlarged flow path crosssectional area of the intake passage is obtainable. This can furthersuppress obstruction to airflow in the intake passage by the crossmember.

It is preferred in the straddled vehicle described above that the crossmember includes a right part connected to the right seat frame andextending upward, a left part connected to the left seat frame andextending upward, an upper part extending from the right part to theleft part at a position higher than the right seat frame and the leftseat frame, a right reinforcement portion located more leftward than theright part and configured to connect the right seat frame with the upperpart, and a left reinforcement portion located more rightward than theleft part and configured to connect the left seat frame with the upperpart, wherein the right hole is formed with the right part, the upperpart, and the right reinforcement portion, and the left hole is formedwith the left part, the upper part, and the left reinforcement portion.The cross member includes the right part, the left part, and the upperpart. Accordingly, the cross member can easily have the shape curved tobe convex upward in the rear view of the vehicle. The cross memberincludes the right reinforcement portion and the left reinforcementportion. This can easily secure strength of the cross member.

It is preferred in the straddled vehicle described above that the rightreinforcement portion is also connected with the right part, and theleft reinforcement portion is also connected with the left part. Thiscan further improve strength of the cross member.

It is preferred that the straddled vehicle described above that the rearfender has an upper edge curved to be convex upward in a first crosssection that contains the cross member and is perpendicular to thelongitudinal direction of the vehicle, and the upper edge of the rearfender contains a part located at a position higher than a lower edge ofthe right seat frame and a lower edge of the left seat frame in thefirst cross section. In the first cross section, the upper edge of therear fender contains the part located at a position higher than a loweredge of the right seat frame and a lower edge of the left seat frame.Thus, a part of the rear fender below the cross member is located at arelatively high position. As described above, the cross member has theshape curved to be convex upward in the rear view of the vehicle. Thiscan prevent conveniently a distance between the cross member and therear fender in the first cross section from being excessively small.That is, a flow path cross sectional area of the intake passage can beprevented from being excessively small conveniently in the first crosssection. Thus, air can flow smoothly in the intake passage even when thepart of the rear fender below the cross member is located at arelatively high position. In other words, the shape of the cross memberis more helpful when the part of the rear fender below the cross memberis located at a relatively high position.

It is preferred that the straddled vehicle described above includes aright guide wall located inside of the intake passage and rightward ofthe vehicle center plane, and a left guide wall located inside of theintake passage and leftward of the vehicle center plane, wherein atleast part of the right guide wall is located more leftward than theright inlet port, the right guide wall extends forward and leftward inplan view of the vehicle, at least part of the left guide wall islocated more rightward than the left inlet port, and the left guide wallextends forward and rightward in the plan view of the vehicle. The rightguide wall is located inside of the intake passage. The right guide wallis located rightward of the vehicle center plane. Moreover, at leastpart of the right guide wall is located more leftward than the rightinlet port. Consequently, the right guide wall enables to convenientlyguide air having flowed from the right inlet port into the intakepassage. The right guide wall extends forward and leftward in the planview of the vehicle. Consequently, a flow path for air having flowedfrom the right inlet port into the intake passage expands toward the aircleaner. Consequently, the right guide wall enables convenient guidingof air, having flowed from the right inlet port into the intake passage,to the air cleaner. The left guide wall is located inside of the intakepassage. The left guide wall is located leftward of the vehicle centerplane. Moreover, at least part of the left guide wall is located morerightward than the left inlet port. Consequently, the left guide wallenables efficient guiding of air having flowed from the left inlet portinto the intake passage conveniently. The left guide wall extendsforward and rightward in the plan view of the vehicle. Consequently, aflow path for air having flowed from the left inlet port into the intakepassage expands toward the air cleaner. Consequently, the left guidewall enables convenient guiding of air, having flowed from the leftinlet port into the intake passage, to the air cleaner.

It is preferred in the straddled vehicle described above that a frontpart of the right guide wall is connected to a front part of the leftguide wall. This achieves convenient prevention of air from stagnatingaround the front part of the right guide wall and the front part of theleft guide wall. Consequently, air can flow smoothly also around thefront part of the right guide wall and the front part of the left guidewall.

It is preferred in the straddled vehicle described above that at leastpart of the right guide wall contacts the seat and the rear fender, andat least part of the left guide wall contacts the seat and the rearfender. At least part of the right guide wall contacts the seat and therear fender. This achieves reduction in a gap between the right guidewall and the seat and reduction in a gap between the right guide walland the rear fender. Accordingly, air is difficult to flow into the gapbetween the right guide wall and the seat or the gap between the rightguide wall and the rear fender. Consequently, the right guide wallenables more convenient guiding of air having flowed from the rightinlet port into the intake passage. Likewise, at least part of the leftguide wall contacts the seat and the rear fender. This achievesreduction in a gap between the left guide wall and the seat andreduction in a gap between the left guide wall and the rear fender.Accordingly, air is difficult to flow into the gap between the leftguide wall and the seat or the gap between the left guide wall and therear fender. Consequently, the left guide wall enables more convenientguiding of air having flowed from the left inlet port into the intakepassage.

It is preferred that the straddled vehicle described above furtherincludes a position regulator configured to join the seat with eitherthe body frame or the rear fender to regulate movement of the seatrelative to the body frame or the rear fender, wherein the right guidewall is located rightward of the position regulator in the plan view ofthe vehicle, the right guide wall extends from a position rightward ofthe position regulator to a position forward of the position regulator,the left guide wall is located leftward of the position regulator in theplan view of the vehicle, the left guide wall extends from a positionleftward of the position regulator to a position forward of the positionregulator. The straddled vehicle includes the position regulator.Accordingly, the movement of the seat relative to the body frame or therear fender can be restricted conveniently. The position regulator islocated leftward of the right guide wall in the plan view of thevehicle. The right guide wall extends from a position rightward of theposition regulator to a position forward of the position regulator.Consequently, the position regulator is unlikely to be obstruction toflow of air having flowed from the right inlet port into the intakepassage. The position regulator is located rightward of the left guidewall in the plan view of the vehicle. The left guide wall extends from aposition leftward of the position regulator to a position forward of theposition regulator. Consequently, the position regulator is unlikely tobe obstruction to flow of air having flowed from the left inlet portinto the intake passage. As described above, the position regulator isunlikely to be obstruction to the airflow in the intake passage.

It is preferred in the straddled vehicle described above that theposition regulator is located at a position not overlapping the rightinlet port or the left inlet port in the rear view of the vehicle. Thiscan further suppress obstruction to airflow in the intake passage by theposition regulator.

It is preferred that the straddled vehicle described above furtherincludes a fin located inside of the intake passage, wherein the fin islocated more forward than the right guide wall and the left guide wall,the fin is located more leftward than the right inlet port and morerightward than the left inlet port, and the fin extends in thelongitudinal direction of the vehicle in the plan view of the vehicle.The fin enables to conveniently adjust flow of air having flowed fromthe right inlet port into the intake passage as well as flow of airhaving flowed from the left inlet port into the intake passage to bedirected toward the air cleaner.

It is preferred in the straddled vehicle described above that the seatincludes a guide slope configured to contact an upper part of the intakepassage, wherein the guide slope is located more forward than the fin,the guide slope is located above the air cleaner, and the guide slope isinclined forward and downward. The guide slope enables to convenientlyadjust airflow in the intake passage around the air cleaner to bedirected toward the air cleaner.

It is preferred that the straddled vehicle described above furtherincludes a right blocking wall located inside of the intake passage andrightward of the vehicle center plane, and a left blocking wall locatedinside of the intake passage and leftward of the vehicle center plane,wherein the right blocking wall is located more forward than the rightinlet port, the right blocking wall overlaps at least part of a boundarybetween the seat and the right side cover in side view of the vehicle,the left blocking wall is located more forward than the left inlet port,and the left blocking wall overlaps at least part of a boundary betweenthe seat and the left side cover in the side view of the vehicle. Theright blocking wall is located inside of the intake passage. The rightblocking wall is located rightward of the vehicle center plane. Theright blocking wall is located more forward than the right inlet port.The right blocking wall overlaps at least part of the boundary betweenthe seat and the right side cover in the side view of the vehicle.Consequently, the right blocking wall can conveniently prevent flow ofair from a position more forward than the right inlet port into theintake passage through the gap between the seat and the right sidecover. Likewise, the left blocking wall is located inside of the intakepassage. The left blocking wall is located leftward of the vehiclecenter plane. The left blocking wall is located more forward than theleft inlet port. The left blocking wall overlaps at least part of theboundary between the seat and the left side cover in the side view ofthe vehicle. Consequently, the left blocking wall can conveniently blockflow of air from a position more forward than the left inlet port intothe intake passage through the gap between the seat and the left sidecover.

It is preferred in the straddled vehicle described above that the rightside cover and the rear fender each form part of a circumferentialportion of the right inlet port, and the left side cover and the rearfender each form part of a circumferential portion of the left inletport. Consequently, the right inlet port and the left inlet port can bemade large easily with a relatively simple configuration.

BRIEF DESCRIPTION OF DRAWINGS

For the purpose of illustrating the invention, there are shown in thedrawings several forms which are presently preferred, it beingunderstood, however, that the invention is not limited to the precisearrangement and instrumentalities shown.

FIG. 1 is a left side view of a straddled vehicle according to anembodiment;

FIG. 2 is a left side view of a rear part of the straddled vehicle;

FIG. 3 is a right side view of the rear part of the straddled vehicle;

FIG. 4 is a plan view of the straddled vehicle;

FIG. 5 is a rear view of the straddled vehicle;

FIG. 6 is a plan view of the rear part of the straddled vehicle;

FIG. 7 is a plan view of the rear part of the straddled vehicle;

FIG. 8 is a left side view of the rear part of the straddled vehicle;

FIG. 9 is a sectional view taken on a vehicle center plane;

FIG. 10 is a sectional view taken on line X-X of FIG. 8;

FIG. 11 is a sectional view taken on line XI-XI of FIG. 2;

FIG. 12 is a sectional view taken on line XII-XII of FIG. 2;

FIG. 13 is a sectional view taken on line XIII-XIII of FIG. 3;

FIG. 14 is a perspective view of a seat frame, a cross member, and abar;

FIG. 15 is a rear view of the cross member;

FIG. 16 is a perspective view of a base of the seat;

FIG. 17 is a bottom view of the seat;

FIG. 18 is a plan view of an air cleaner and a rear fender;

FIG. 19 is a sectional view taken on line XIX-XIX of FIG. 8;

FIG. 20 is a side view of the rear fender;

FIG. 21 is a sectional view taken on line XXI-XXI of FIG. 9;

FIG. 22 is a sectional view taken on line XXII-XXII of FIG. 9;

FIG. 23 is a sectional view taken on line XXIII-XXIII of FIG. 19;

FIG. 24 is a sectional view of a position regulator along the vehiclecenter plane;

FIG. 25 is a perspective view of a stay;

FIG. 26 is a detailed diagram of a bolt configured to fasten a couplingportion to the rear fender;

FIG. 27 is a rear view of the cross member;

FIG. 28 is a perspective view of the cross member seen from an axis of aright hole;

FIG. 29 is a sectional view taken on line XXIX-XXIX of FIG. 9;

FIG. 30 is a sectional view taken on line XXX-XXX of FIG. 9;

FIG. 31 is a sectional view taken on line XXXI-XXXI of FIG. 9; and

FIG. 32 is a sectional view taken on line XXXII-XXXII of FIG. 9.

DESCRIPTION OF EMBODIMENTS

A straddled vehicle 1 according to this invention will be describedhereinafter with reference to the drawings.

1. Outline Construction of Straddled Vehicle 1

FIG. 1 is a left side view of a straddled vehicle according to anembodiment.

FIG. 1 shows a longitudinal direction X, a transverse direction Y, andan up-down direction Z of the straddled vehicle 1. The longitudinaldirection X, transverse direction Y, and up-down direction Z are definedwith reference to a driver (also called a rider) mounted on thestraddled vehicle 1. The longitudinal direction X, transverse directionY, and up-down direction Z are perpendicular to one another. Thelongitudinal direction X and transverse direction Y are horizontal. Theup-down direction Z is vertical.

The terms “forward”, “rearward”, “upward”, “downward”, “rightward”, and“leftward”, respectively, mean “forward”, “rearward”, “upward”,“downward”, “rightward”, and “leftward” as seen from the driver mountedon the straddled vehicle 1. Unless otherwise stated in thisspecification, “forward” and “rearward” include not only directionsparallel to the longitudinal direction X but also directions approximateto the longitudinal direction X. The directions approximate to thelongitudinal direction X are, for example, directions at angles notexceeding 45 degrees to the longitudinal direction X. Similarly, unlessotherwise stated, “rightward” and “leftward” include not only directionsparallel to the transverse direction Y but also directions approximateto the transverse direction Y. Unless otherwise stated, “upward” and“downward” include not only directions parallel to the up-down directionZ but also directions approximate to the up-down direction Z. Forreference, the drawings show front, rear, up, down, right, and left, asappropriate.

This specification uses various expressions describing arrangements,which have the following meanings, respectively. The followingdescription will be made taking the transverse direction Y for example,and the same may be applied to the longitudinal direction X and up-downdirection Z.

The expression “Member MA is located more rightward/leftward than memberMB,” defines a position in the transverse direction Y of member MArelative to member MB, and does not define a position in thelongitudinal direction X or the up-down direction Z of member MArelative to member MB. In the case of this expression, member MA may, ormay not, overlap member MB in a side view of the vehicle.

The expression “Member MA is located rightward/leftward of member MB,”without reference to a looking direction defines a position in thetransverse direction Y of member MA relative to member MB, a position inthe longitudinal direction X of member MA relative to member MB, and aposition in the up-down direction Z of member MA relative to member MB.This expression means that member MA is located more rightward/leftwardthan member MB, and that at least part of member MA overlaps at leastpart of member MB in a side view of the vehicle.

The expression “Member MA is located rightward/leftward of member MB ina plan view of the vehicle,” defines a position in the transversedirection Y of member MA relative to member MB, and a position in thelongitudinal direction X of member MA relative to member MB, and doesnot define a position in the up-down direction Z of member MA relativeto member MB. This expression means that member MA is located morerightward/leftward than member MB, and that the front end of member MAis located more forward than the rear end of member MB, and that therear end of member MA is located more rearward than the front end ofmember MB.

The expression “Member MA is located rightward/leftward of member MB ina front view of the vehicle,” defines a position in the transversedirection Y of member MA relative to member MB, and a position in theup-down direction Z of member MA relative to member MB, and does notdefine a position in the longitudinal direction X of member MA relativeto member MB. This expression means that: member MA is located morerightward/leftward than member MB, the upper end of member MA is locatedhigher than the lower end of member MB, and the lower end of member MAis located lower than the upper end of member MB.

The straddled vehicle 1 is an off-road vehicle, for example. Thestraddled vehicle 1 is a dual purpose vehicle, for example. Thestraddled vehicle 1 is also called a dual-sport motorcycle.

The straddled vehicle 1 includes a body frame 2. FIG. 1 partially showsthe body frame 2 with dotted lines. The body frame 2 includes a mainframe 3 and a down frame 4. The main frame 3 extends rearward anddownward in the side view of the vehicle. The down frame 4 is locatedbelow the main frame 3 in the side view of the vehicle. The down frame 4also extends rearward and downward in the side view of the vehicle. Arear part of the main frame 3 is connected to a rear part of the downframe 4. The body frame 2 further includes a head tube, not shown. Thehead tube is connected to a front part of the main frame 3 and a frontpart of the down frame 4.

The body frame 2 includes a seat frame 6, a back stay 7, and a crossmember 8. The seat frame 6, the back stay 7, and the cross member 8 arelocated behind the main frame 3 in the side view of the vehicle. Theseat frame 6 and the back stay 7 are supported by the main frame 3. Theseat frame 6 extends rearward from the main frame 3 in the side view ofthe vehicle. The back stay 7 is located below the seat frame 6 in theside view of the vehicle. The back stay 7 extends rearward and upwardfrom the main frame 3 in the side view of the vehicle. The seat frame 6is connected to a rear end of the back stay 7. The cross member 8 isconnected to the seat frame 6. The cross member 8 extends upward fromthe seat frame 6 in the side view of the vehicle.

The straddled vehicle 1 includes a steering device 21. The steeringdevice 21 is supported by the body frame 2 (specifically, head tube).The steering device 21 is rotatable relative to the body frame 2(specifically, head tube). The steering device 21 includes a handlebar21 a, a front axle 21 b, and a front suspension 21 c. The handlebar 21 ais located in an upper part of the steering device 21. The front axle 21b is located lower and more forward than the handlebar 21 a in the sideview of the vehicle. The front suspension 21 c connects the handlebar 21a with the front axle 21 b. The front suspension 21 c extends downwardand forward in the side view of the vehicle. A driver of the straddledvehicle 1 grips the handlebar 21 a. In response to operation of thehandlebar 21 a, the steering device 21 rotates relative to the bodyframe 2.

The straddled vehicle 1 includes a front wheel 22. The front wheel 22 issupported by the front axle 21 b. With a rotation of the steering device21 relative to the body frame 2, the direction of the front wheel 22changes. Further, the front wheel 22 is rotatable about the front axle21 b.

The straddled vehicle 1 includes a fuel tank 23 and an engine 24. Thefuel tank 23 stores fuel. The fuel tank 23 includes a fuel tank body 23a and a tank cap 23 b. The tank cap 23 b is attached to an upper part ofthe fuel tank body 23 a. The engine 24 burns fuel to generate power fortraveling the straddled vehicle 1. The fuel tank 23 and the engine 24are located above the down frame 4 in the side view of the vehicle. Theengine 24 is located below the main frame 3 in the side view of thevehicle. The engine 24 is located below the fuel tank 23 in the sideview of the vehicle. The fuel tank 23 and the engine 24 are located morerearward than the steering device 21 and the front wheel 22 in the sideview of the vehicle. The fuel tank 23 and the engine 24 are located moreforward than the rear part of the main frame 3 in the side view of thevehicle. The fuel tank 23 and the engine 24 are supported by the bodyframe 2. For example, the fuel tank 23 is supported by the main frame 3.For example, the engine 24 is supported by the main frame 3 and the downframe 4. The engine 24 is fixed to the body frame 2. The engine 24 doesnot swing relative to the body frame 2.

The straddled vehicle 1 includes a pivot shaft 25, a swing arm 26, arear axle 27, a rear wheel 28, and a chain 29. The pivot shaft 25 issupported by the rear part of the main frame 3. The pivot shaft 25 islocated more rearward than the fuel tank 23 and the engine 24. The pivotshaft 25 is located at a position lower than the back stay 7, forexample. However, the invention is not limited to this. The pivot shaft25 may be located at a position equal to or higher than a front end ofthe back stay 7. The swing arm 26 is supported by the pivot shaft 25.The swing arm 26 extends rearward from the pivot shaft 25. The swing arm26 is swingable about the pivot shaft 25. The rear axle 27 is supportedby a rear part of the swing arm 26. The rear wheel 28 is supported bythe rear axle 27. The rear wheel 28 is rotatable about the rear axle 27.The chain 29 transmits power of the engine 24 to the rear wheel 28. Thatis, the engine 24 causes the rear wheel 28 to rotate about the rear axle27 via the chain 29.

The straddled vehicle 1 includes a seat 31. The seat 31 is locatedbehind the fuel tank 23. At least part of the seat 31 is located at aposition equal in level to the fuel tank 23 in the side view of thevehicle. The seat 31 is located at a position higher than the engine 24.The seat 31 is located above the main frame 3, the seat frame 6, and thecross member 8 in the side view of the vehicle. The seat 31 extends froma position more forward than the seat frame 6 to a position morerearward than the cross member 8.

The driver sits down across the seat 31, and puts on a knee grip. Theknee grip is a holding of part of the straddled vehicle 1 between thedriver's legs. The part of the straddled vehicle 1 is, for example, atleast part of the main frame 3 and the fuel tank 23.

The straddled vehicle 1 includes an air cleaner 51. The air cleaner 51is located more rearward than the fuel tank 23 and the engine 24 in theside view of the vehicle. The air cleaner 51 is located behind the mainframe 3 in the side view of the vehicle. The air cleaner 51 is locatedmore rearward than a front end of the seat frame 6 in the side view ofthe vehicle. The air cleaner 51 is located more forward than the crossmember 8 in the side view of the vehicle. The air cleaner 51 is locatedbelow the seat 31 in the side view of the vehicle. The air cleaner 51 islocated below the seat frame 6 in the side view of the vehicle. The aircleaner 51 is located higher than the front end of the back stay 7 inthe side view of the vehicle. The air cleaner 51 overlaps the back stay7 in the side view of the vehicle. The air cleaner 51 is located higherthan the pivot shaft 25.

The straddled vehicle 1 includes a joint 57, a carburetor 58, and an airsupply pipe 59. The joint 57 is also called air duct. The joint 57 andthe air supply pipe 59 are located behind the engine 24 and in front ofthe air cleaner 51 in the side view of the vehicle. The air cleaner 51is connected to the joint 57. The joint 57 is connected to thecarburetor 58. The carburetor 58 is connected to the air supply pipe 59.The air supply pipe 59 is connected to an intake port (not shown) of theengine 24. The straddled vehicle 1 may include a fuel injector insteadof the carburetor 58.

Reference is made to FIGS. 1 to 3. FIG. 2 is a left side view of a rearpart of the straddled vehicle 1. FIG. 3 is a right side view of the rearpart of the straddled vehicle 1. The straddled vehicle 1 includes aright side cover 61R and a left side cover 61L. FIGS. 1 and 2 each showthe left side cover 61L. FIG. 3 shows the right side cover 61R. Theright side cover 61R is located rightward of the left side cover 61L.When no distinction is particularly made between the right side cover61R and the left side cover 61L, a simple term “side cover 61” is to bedescribed.

The side cover 61 is located more rearward than the fuel tank 23 and theengine 24 in the side view of the vehicle. The side cover 61 is locatedmore rearward than the main frame 3 in the side view of the vehicle. Theside cover 61 is located more rearward than a front end of the seat 31in the side view of the vehicle. The side cover 61 is located below theseat 31 in the side view of the vehicle. The side cover 61 is located ata position above the air cleaner 51 and a position behind the aircleaner 51 in the side view of the vehicle. The side cover 61 is locatedabove the rear wheel 28 in the side view of the vehicle. The side cover61 overlaps the seat frame 6, the back stay 7, and the cross member 8 inthe side view of the vehicle.

The side cover 61 extends in a substantially longitudinal direction X inthe side view of the vehicle. The side cover 61 passes a position abovethe air cleaner 51, and extends from a position more forward than theair cleaner 51 to a position more rearward than the air cleaner 51 inthe side view of the vehicle. The side cover 61 extends from a positionmore forward than the seat frame 6 to a position more rearward than theseat frame 6 and the seat 31 in the side view of the vehicle.

The straddled vehicle 1 includes a rear fender 71. FIG. 2 partiallyshows the rear fender 71 with dotted lines. The rear fender 71 islocated more rearward than the fuel tank 23 and the engine 24 in theside view of the vehicle. The rear fender 71 is located more rearwardthan the main frame 3 in the side view of the vehicle. The rear fender71 is located at a position behind the air cleaner 51 in the side viewof the vehicle. The rear fender 71 is located at a position below of theseat 31 and a position rearward of the seat 31 in the side view of thevehicle. The rear fender 71 is located above the rear wheel 28 in theside view of the vehicle. The rear fender 71 overlaps the seat frame 6and the back stay 7 in the side view of the vehicle. The rear fender 71overlaps the side cover 61 in the side view of the vehicle.

The rear fender 71 includes a part located below the seat frame 6, thecross member 8, and the seat 31 in the side view of the vehicle.Specifically, a front part of the rear fender 71 is located below theseat frame 6, the cross member 8, and the seat 31 in the side view ofthe vehicle.

The rear fender 71 extends in a substantially longitudinal direction Xin the side view of the vehicle. The rear fender 71 passes below thecross member 8, and extends from a position more forward than the crossmember 8 to a position more rearward than the side cover 61 in the sideview of the vehicle. More specifically, the rear fender 71 extendsrearward and upward from a rear part of the air cleaner 51 to a rearpart of the seat 31 and a rear part of the side cover 61 in the sideview of the vehicle. Moreover, the rear fender 71 extends rearward fromthe rear part of the seat 31 and the rear part of the side cover 61 inthe side view of the vehicle.

FIG. 4 is a plan view of the straddled vehicle 1. FIG. 4 shows a vehiclecenter plane C. The vehicle center plane C is an imaginary plane thatpasses through the center of the straddled vehicle 1 and isperpendicular to the transverse direction Y. The seat 31 and the rearfender 71 are located on the vehicle center plane C. The front wheel 22,the fuel tank 23, and the rear wheel 28 are also located on the vehiclecenter plane C. The right side cover 61R is located rightward of theseat 31 in the plan view of the vehicle. The left side cover 61L islocated leftward of the seat 31 in the plan view of the vehicle. Therear fender 71 extends rearward from the rear part of the seat 31 andthe rear part of the side cover 61 in the plan view of the vehicle.

FIG. 5 is a rear view of the straddled vehicle 1. The air cleaner 51 andthe rear fender 71 are located on the vehicle center plane C. The rearfender 71 is located above the air cleaner 51 in the rear view of thevehicle. The rear fender 71 overlaps the seat 31 in the rear view of thevehicle. The right side cover 61R is located rightward of the aircleaner 51 and the rear fender 71 in the rear view of the vehicle. Theleft side cover 61L is located leftward of the air cleaner 51 and therear fender 71 in the rear view of the vehicle.

2. Construction Below Seat 31

FIG. 6 is a plan view of the rear part of the straddled vehicle 1. FIG.6 shows the seat 31 with dotted lines. FIG. 7 is also a plan view of therear part of the straddled vehicle 1. FIG. 7 omits illustration of theseat 31 and the side cover 61. The seat frame 6 includes a right seatframe 6R and a left seat frame 6L. The left seat frame 6L is locatedleftward of the right seat frame 6R. The left seat frame 6L overlaps theright seat frame 6R in the side view of the vehicle, which illustrationis omitted. The right seat frame 6R is located rightward of the vehiclecenter plane C. The left seat frame 6L is located leftward of thevehicle center plane C. The right seat frame 6R and the left seat frame6L each extend in the longitudinal direction X in the plan view of thevehicle. The right seat frame 6R has the same construction and shape asthe left seat frame 6L except for its symmetric.

The back stay 7 includes a right back stay 7R and a left back stay 7L.The left back stay 7L is located leftward of the right back stay 7R. Theright back stay 7R is located rightward of the vehicle center plane C.The left back stay 7L is located leftward of the vehicle center plane C.The right back stay 7R is connected to the right seat frame 6R. The leftback stay 7L is connected to the left seat frame 6L.

The cross member 8 is located between the right seat frame 6R and theleft seat frame 6L. Specifically, the cross member 8 is located leftwardof the right seat frame 6R and rightward of the left seat frame 6L inthe plan view of the vehicle. The cross member 8 connects the right seatframe 6R with the left seat frame 6L. The cross member 8 extends in atransverse direction Y in the plan view of the vehicle.

The body frame 2 further includes a bar 9. The bar 9 is located in frontof the cross member 8 in the plan view of the vehicle. The bar 9 islocated more rearward than the front end of the seat frame 6 in the planview of the vehicle. The bar 9 is located between the right seat frame6R and the left seat frame 6L. Specifically, the bar 9 is locatedleftward of the right seat frame 6R and rightward of the left seat frame6L in the plan view of the vehicle. The bar 9 connects the right seatframe 6R with the left seat frame 6L. The bar 9 extends in thetransverse direction Y in the plan view of the vehicle.

The air cleaner 51 is located on the vehicle center plane C in the planview of the vehicle. The air cleaner 51 includes an air cleaner element52 and an air cleaner box 53. The air cleaner element 52 has asubstantially cylindrical shape. The air cleaner element 52 is locatedon the vehicle center plane C in the plan view of the vehicle. The aircleaner element 52 includes an outer circumferential face 52 a and aback face 52 b. Air enters into the air cleaner element 52 from theouter circumferential face 52 a and the back face 52 b of the aircleaner element 52. Moreover, air flows out of the air cleaner element52 to a joint 57. The air cleaner box 53 is located below, rightward,and leftward of the air cleaner element 52. The air cleaner 51 shown inFIGS. 1 to 5 corresponds to the air cleaner box 53.

The following describes arrangement of each component.

The seat 31 overlaps the right seat frame 6R and the left seat frame 6Lin the plan view of the vehicle. The seat 31 is located above the rightseat frame 6R and the left seat frame 6L. The seat 31 overlaps the rightback stay 7R and the left back stay 7L in the plan view of the vehicle.The seat 31 is located above the right back stay 7R and the left backstay 7L. The seat 31 overlaps the cross member 8 in the plan view of thevehicle. The seat 31 is located above the cross member 8. The seat 31overlaps the bar 9 in the plan view of the vehicle. The seat 31 islocated above the bar 9.

The seat 31 overlaps the air cleaner 51 in the plan view of the vehicle.The seat 31 overlaps the right side cover 61R in the plan view of thevehicle. The seat 31 overlaps the left side cover 61L in the plan viewof the vehicle. The seat 31 overlaps the rear fender 71 in the plan viewof the vehicle. The seat 31 is located above the air cleaner 51, theright side cover 61R, and the left side cover 61L. The seat 31 islocated above part of the rear fender 71 (e.g., front part of the rearfender 71). That is, the rear fender 71 contains a part located belowthe seat 31.

The air cleaner 51 overlaps the right seat frame 6R and the left seatframe 6L in the plan view of the vehicle. The air cleaner 51 overlapsthe right back stay 7R and the left back stay 7L in the plan view of thevehicle. The air cleaner 51 does not overlap the cross member 8 in theplan view of the vehicle. The air cleaner 51 is located in front of thecross member 8 in the plan view of the vehicle. The air cleaner 51overlaps the bar 9 in the plan view of the vehicle. The air cleanerelement 52 does not overlap the bar 9 in the plan view of the vehicle.The air cleaner element 52 is located behind the bar 9 in the plan viewof the vehicle.

The air cleaner 51 is located leftward of the right side cover 61R. Partof the air cleaner 51 overlaps the right side cover 61R in the plan viewof the vehicle. The air cleaner 51 is located rightward of the left sidecover 61L. Part of the air cleaner 51 overlaps the left side cover 61Lin the plan view of the vehicle. The air cleaner element 52 is locatedleftward of the right side cover 61R. The air cleaner element 52 islocated rightward of the left side cover 61L.

The air cleaner 51 (specifically, air cleaner box 53) overlaps the rearfender 71 in the plan view of the vehicle. FIG. 7 shows part of the rearfender 71 overlapping the air cleaner 51 in the plan view of the vehicleby dotted lines. The part of the rear fender 71 overlapping the aircleaner 51 in the plan view of the vehicle is located below the aircleaner 51. That is, the air cleaner 51 is located above part of therear fender 71 (e.g., front part of the rear fender 71). The air cleanerelement 52 does not overlap the rear fender 71 in the plan view of thevehicle. The air cleaner element 52 is located in front of the rearfender 71 in the plan view of the vehicle.

The right side cover 61R is located rightward of the right seat frame6R. Part of the right side cover 61R overlaps the right seat frame 6R inthe plan view of the vehicle. The right side cover 61R overlaps theright back stay 7R in the plan view of the vehicle. The left side cover61L is located leftward of the left seat frame 6L. Part of the left sidecover 61L overlaps the left seat frame 6L in the plan view of thevehicle. The left side cover 61L overlaps the left back stay 7L in theplan view of the vehicle. The right side cover 61R is located rightwardof the cross member 8 in the plan view of the vehicle. The right sidecover 61R overlaps part of the cross member 8 in the plan view of thevehicle. The left side cover 61L is located leftward of the cross member8 in the plan view of the vehicle. The left side cover 61L overlaps partof the cross member 8 in the plan view of the vehicle. The right sidecover 61R and the left side cover 61L do not overlap the bar 9 in theplan view of the vehicle. The right side cover 61R is located rightwardof the bar 9. The left side cover 61L is located leftward of the bar 9.

The right side cover 61R is located rightward of the rear fender 71.Part of the right side cover 61R overlaps the rear fender 71 in the planview of the vehicle. The left side cover 61L is located leftward of therear fender 71. Part of the left side cover 61L overlaps the rear fender71 in the plan view of the vehicle.

The rear fender 71 overlaps the right seat frame 6R and the left seatframe 6L in the plan view of the vehicle. The rear fender 71 overlapsthe cross member 8 in the plan view of the vehicle. The rear fender 71contains a part located below the right seat frame 6R, the left seatframe 6L, and the cross member 8. Specifically, the front part of therear fender 71 is located below the right seat frame 6R, the left seatframe 6L, and the cross member 8.

The rear fender 71 overlaps the right back stay 7R and the left backstay 7L in the plan view of the vehicle. The rear fender 71 contains apart located below the right back stay 7R and the left back stay 7L. Therear fender 71 does not overlap the bar 9 in the plan view of thevehicle. The rear fender 71 is located behind the bar 9 in the plan viewof the vehicle.

FIG. 8 is a left side view of the rear part of the straddled vehicle 1.FIG. 8 omits illustration of the seat 31 and the left side cover 61L.FIG. 8 omits illustration of part of the air cleaner box 53. FIG. 9 is asectional view taken along the vehicle center plane C. The straddledvehicle 1 includes an intake passage 81. The intake passage 81 is aspace where air flows toward the air cleaner 51. The intake passage 81extends in the longitudinal direction X.

The air cleaner 51 is located in the front part of the intake passage81. The intake passage 81 is located behind the air cleaner 51. Theintake passage 81 contacts the air cleaner 51. The intake passage 81contacts the air cleaner element 52. The intake passage 81 contacts theouter circumferential face 52 a and the back face 52 b of the aircleaner element 52.

The intake passage 81 extends rearward from the air cleaner 51. Morespecifically, the intake passage 81 extends rearward and upward.

The intake passage 81 is located below the seat 31. The intake passage81 contacts the seat 31. The seat 31 corresponds to a top wall of theintake passage 81.

The intake passage 81 is located above the rear fender 71. The intakepassage 81 contacts the rear fender 71. The rear fender 71 correspondsto a bottom wall of the intake passage 81.

FIG. 10 is a sectional view taken on line X-X of FIG. 8. The sectiontaken on the line X-X corresponds to a section that contains the crossmember 8 and is perpendicular to the longitudinal direction X. In thisspecification, the section that contains the cross member 8 and isperpendicular to the longitudinal direction X is called a “first crosssection”.

In the first cross section, the seat 31 passes through a position abovethe cross member 8, and extends in the transverse direction Y. The crossmember 8 contacts the seat 31. The cross member 8 contacts the seat 31at a position higher than the right seat frame 6R and the left seatframe 6L.

In the first cross section, the rear fender 71 passes through a positionbelow the seat frame 6, the back stay 7, and the cross member 8, andextends in the transverse direction Y. The rear fender 71 does notcontact the cross member 8. The rear fender 71 also does not contact theseat frame 6. A space below the seat frame 6 and the cross member 8 andabove the rear fender 71 is part of the intake passage 81.

The right side cover 61R is located rightward of the seat frame 6, theback stay 7, and the cross member 8. In the first cross section, theright side cover 61R extends in the substantially up-down direction Z.In the first cross section, the right side cover 61R passes through aposition rightward of the right seat frame 6R, and extends from the seat31 to the rear fender 71.

The intake passage 81 is located leftward of the right side cover 61R.The intake passage 81 contacts the right side cover 61R. The right sidecover 61R corresponds to a right wall of the intake passage 81.

The left side cover 61L is located leftward of the seat frame 6, theback stay 7, and the cross member 8. In the first cross section, theleft side cover 61L extends in the substantially up-down direction Z. Inthe first cross section, the left side cover 61L passes through aposition leftward of the left seat frame 6L, and extends from the seat31 to the rear fender 71.

The intake passage 81 is located rightward of the left side cover 61L.The intake passage 81 contacts the left side cover 61L. The left sidecover 61L corresponds to a left wall of the intake passage 81.

In summary, the intake passage 81 is defined by the seat 31, the rightside cover 61R, the left side cover 61L, and the rear fender 71. Theintake passage 81 is surrounded by the seat 31, the right side cover61R, the left side cover 61L, and the rear fender 71.

The rear fender 71 includes an upper edge 71 a in the first crosssection. The upper edge 71 a is curved convexly upward.

In the first cross section, the rear fender 71 is located at arelatively high position. The right seat frame 6R includes an upper edge6Ra and a lower edge 6Rb in the first cross section. The left seat frame6L includes an upper edge 6La and a lower edge 6Lb in the first crosssection. The upper edge 71 a of the rear fender 71 contains a firstportion 71 a 1 located at a position higher than the lower edge 6Rb andthe lower edge 6Lb. The first portion 71 a 1 is located leftward of theright seat frame 6R and rightward of the left seat frame 6L. The firstportion 71 a 1 intersects the vehicle center plane C in the first crosssection.

The upper edge 71 a contains a second portion 71 a 2 located at aposition lower than the lower edge 6Rb and the lower edge 6Lb. Thesecond portion 71 a 2 is located rightward of the first portion 71 a 1and leftward of the first portion 71 a 1.

The entire of the upper edge 71 a of the rear fender 71 is located at aposition lower than the upper edge 6Ra and the upper edge 6La. That is,the rear fender 71 is located at a position lower than the upper edge6Ra and the upper edge 6La in the first cross section.

Reference is made to FIG. 4. The straddled vehicle 1 includes a rightinlet port 83R and a left inlet port 83L. The right inlet port 83Rcommunicates the intake passage 81 and the outside of the straddledvehicle 1. Also, the left inlet port 83L communicates the intake passage81 and the outside of the straddled vehicle 1. The right inlet port 83Ris located rightward of the vehicle center plane C. The left inlet port83L is located leftward of the vehicle center plane C.

The right inlet port 83R and the left inlet port 83L are located nearthe rear part of the seat 31. The right inlet port 83R and the leftinlet port 83L are arranged side by side in the transverse direction Yin the plan view of the vehicle. The right inlet port 83R and the leftinlet port 83L are symmetric in shape. When no distinction isparticularly made between the right inlet port 83R and the left inletport 83L, a simple term “inlet port 83” is to be described.

Reference is made to FIG. 2. The left inlet port 83L is opened rearward.The left inlet port 83L is defined by the seat 31, the left side cover61L, and the rear fender 71. The left inlet port 83L is a gap among theseat 31, the left side cover 61L, and the rear fender 71. The seat 31,the left side cover 61L, and the rear fender 71 each form part of acircumferential portion of the left inlet port 83L. Specifically, thecircumferential portion of the left inlet port 83L contains a partformed with the seat 31, a part formed with the left side cover 61L, anda part formed with the rear fender 71.

Reference is made to FIG. 3. The right inlet port 83R is openedrearward. The right inlet port 83R is defined by the seat 31, the rightside cover 61R, and the rear fender 71. The right inlet port 83R is agap among the seat 31, the right side cover 61R, and the rear fender 71.The seat 31, the right side cover 61R, and the rear fender 71 each formpart of a circumferential portion of the right inlet port 83R.

FIG. 5 shows the right inlet port 83R and the left inlet port 83L bydotted lines. The right inlet port 83R and the left inlet port 83Loverlap the rear fender 71 (specifically, a rear part of the rear fender71) in the rear view of the vehicle. The right inlet port 83R and theleft inlet port 83L are located in substantially the same level.

Reference is made to FIG. 8. FIG. 8 shows the left inlet port 83L bydotted lines. The left inlet port 83L is located in a rear part of theintake passage 81. The left inlet port 83L is located more rearward thanthe air cleaner 51. The left inlet port 83L is located more rearwardthan the cross member 8. At least part of the left inlet port 83L islocated more rearward than the left seat frame 6L. The left inlet port83L is located at a position higher than the air cleaner 51. The leftinlet port 83L is located at a position higher than the left seat frame6L.

The right inlet port 83R is located in a rear part of the intake passage81, which illustration is omitted. The right inlet port 83R is locatedmore rearward than the air cleaner 51. The right inlet port 83R islocated more rearward than the cross member 8. At least part of theright inlet port 83R is located more rearward than the right seat frame6R. The right inlet port 83R is located at a position higher than theair cleaner 51. The right inlet port 83R is located at a position higherthan the right seat frame 6R.

The intake passage 81 extends from the air cleaner 51 to the inlet port83. The intake passage 81 in the longitudinal direction X ranges morerearward than the air cleaner 51 and more forward than the inlet port83.

Reference is made to FIGS. 6 to 8. Part of the seat frame 6 is locatedinside of the intake passage 81. The front end of the seat frame 6 islocated outside of the intake passage 81. The front end of the seatframe 6 is located more forward than the intake passage 81. The entireof the cross member 8 is located inside of the intake passage 81.

3. Support Configuration of Side Cover 61

The following describes a support configuration of the left side cover61L and that of the right side cover 61R.

3-1. Support Configuration of Left Side Cover 61L

Reference is made to FIG. 6. The left side cover 61L is supported by therear fender 71. Specifically, the straddled vehicle 1 includes afastening portion 91. The fastening portion 91 fastens the left sidecover 61L to the rear fender 71. The left side cover 61L is connected tothe rear fender 71 via the fastening portion 91.

The fastening portion 91 is located at a position inside of the intakepassage 81. The fastening portion 91 is located leftward of the leftinlet port 83L in the plan view of the vehicle. The fastening portion 91is located more rearward than the air cleaner 51 in the plan view of thevehicle. The fastening portion 91 is located more rearward than thecross member 8 in the plan view of the vehicle.

Reference is made to FIG. 2. The fastening portion 91 is located belowthe left inlet port 83L in the side view of the vehicle. The fasteningportion 91 is located below the left seat frame 6L in the side view ofthe vehicle. The fastening portion 91 is located more rearward than theleft back stay 7L in the side view of the vehicle.

FIG. 11 is a sectional view taken on line XI-XI of FIG. 2. The left sidecover 61L includes a coupling portion 63. The rear fender 71 includes acoupling portion 72. The fastening portion 91 fastens the couplingportion 63 to the coupling portion 72.

For example, the coupling portion 63 includes a seating portion 63 a anda through hole 63 b. The seating portion 63 a has a plate shape. Thethrough hole 63 b is formed in the seating portion 63 a. The throughhole 63 b passes through the seating portion 63 a. The coupling portion72 includes a seating portion 72 a and a through hole 72 b. The seatingportion 72 a has a plate shape. The through hole 72 b is formed in theseating portion 72 a. The through hole 72 b passes through the seatingportion 72 a. The seating portion 72 a is located below the seatingportion 63 a. The seating portion 63 a and the seating portion 72 a arelocated in a stack manner. The through hole 72 b and the through hole 63b are located coaxially. The fastening portion 91 includes a screw 91 aand a nut 91 b. The screw 91 a is inserted into the through holes 63 band 72 b. The screw 91 a is coupled to the nut 91 b. The screw 91 a andthe nut 91 b grip the seating portions 63 a and 72 a.

Examples of the screw 91 a include a bolt, a vis screw, or a tappingscrew. The nut 91 b is, for example, a typical nut or a speed nut (alsocalled clip-on nut).

FIG. 11 shows part of the left inlet port 83L. The left side cover 61Lfurther includes a portion 64. The portion 64 forms a left part of thecircumferential portion of the left inlet port 83L. The rear fender 71further includes a portion 73. The portion 73 forms a lower part of thecircumferential portion of the left inlet port 83L.

The fastening portion 91 is located at a position apart from the leftinlet port 83L. Specifically, the fastening portion 91 is located lowerand more leftward than the left inlet port 83L.

The rear fender 71 further includes a portion 74. The portion 74 isfastened to the left seat frame 6L. Thereby, the rear fender 71 issupported by the left seat frame 6L. The rear fender 71 is fixed to thebody frame 2.

The fastening portion 91 corresponds to one example of the secondfastening portion in the present invention.

Reference is made to FIG. 2. The left side cover 61L is supported by theair cleaner 51. Specifically, the straddled vehicle 1 includes afastening portion 92. The fastening portion 92 fastens the left sidecover 61L and the air cleaner 51 (more specifically, air cleaner box53). The left side cover 61L is connected to the air cleaner 51 (morespecifically, air cleaner box 53) via the fastening portion 92.

The fastening portion 92 is located more forward than the left inletport 83L in the side view of the vehicle. The fastening portion 92 islocated more forward than the fastening portion 91 in the side view ofthe vehicle. The fastening portion 92 is located more forward than thecross member 8 in the side view of the vehicle. The fastening portion 92is located at a position lower than the left inlet port 83L. Thefastening portion 92 is located at a position lower than the fasteningportion 91. The fastening portion 92 is located at a position lower thanthe cross member 8. The fastening portion 92 is located below the rearfender 71 in the side view of the vehicle.

FIG. 12 is a sectional view taken on line XII-XII of FIG. 2. The leftside cover 61L includes a coupling portion 65. The air cleaner box 53includes a coupling portion 54. The fastening portion 92 fastens thecoupling portion 65 to the coupling portion 54.

For example, the coupling portion 65 includes a seating portion 65 a anda through hole 65 b. The seating portion 65 a has a plate shape. Thethrough hole 65 b is formed in the seating portion 65 a. The couplingportion 54 includes a seating portion 54 a and a through hole 54 b. Theseating portion 54 a has a plate shape. The through hole 54 b is formedin the seating portion 54 a. The seating portion 54 a and the seatingportion 65 a are located in a stack manner. The through hole 54 b andthe through hole 65 b are located coaxially. The fastening portion 92includes a screw 92 a and a nut 92 b. The screw 92 a is inserted intothe through holes 65 b and 54 b. The screw 92 a is coupled to the nut 92b. The screw 92 a and the nut 92 b grip the seating portions 65 a and 54a.

3-2. Support Configuration of Right Side Cover 61R

Reference is made to FIG. 4. The right side cover 61R is supported bythe rear fender 71. Specifically, the straddled vehicle 1 includes afastening portion 93. The fastening portion 93 fastens the right sidecover 61R to the rear fender 71. The right side cover 61R is connectedto the rear fender 71 via the fastening portion 93.

The fastening portion 93 is located at a position outside of the intakepassage 81. The fastening portion 93 is located more rearward than theright inlet port 83R. That is, the fastening portion 93 is located morerearward than the intake passage 81. The fastening portion 93 is locatedmore rightward than the right inlet port 83R.

Reference is made to FIG. 3. The fastening portion 93 is located at aposition lower than the right inlet port 83R.

FIG. 13 is a sectional view taken on line XIII-XIII of FIG. 3. The rightside cover 61R includes a coupling portion 67. The rear fender 71includes a coupling portion 75. The fastening portion 93 fastens thecoupling portion 67 to the coupling portion 75.

For example, the coupling portion 67 includes a seating portion 67 a anda through hole 67 b. The seating portion 67 a has a plate shape. Thethrough hole 67 b is formed in the seating portion 67 a. The couplingportion 75 includes a seating portion 75 a and a through hole 75 b. Theseating portion 75 a has a plate shape. The through hole 75 b is formedin the seating portion 75 a. The seating portion 75 a and the seatingportion 67 a are located in a stack manner. The through hole 75 b andthe through hole 67 b are located coaxially. The fastening portion 93includes a screw 93 a and a nut 93 b. The screw 93 a is inserted intothe through holes 67 b and 75 b. The nut 93 b is attached to the screw93 a. The screw 93 a and the nut 93 b grip the seating portions 67 a and75 a.

The fastening portion 93 corresponds to one example of the firstfastening portion in the present invention.

Reference is made to FIG. 3. The right side cover 61R is supported bythe air cleaner 51. Specifically, the straddled vehicle 1 includes afastening portion 94. The fastening portion 94 fastens the right sidecover 61R and the air cleaner 51 (more specifically, air cleaner box53). The right side cover 61R is connected to the air cleaner 51 (morespecifically, air cleaner box 53) via the fastening portion 94.

The fastening portion 94 is located more forward than the right inletport 83R in the side view of the vehicle. The fastening portion 94 islocated more forward than the fastening portion 93 in the side view ofthe vehicle. The fastening portion 94 is located at a position lowerthan the right inlet port 83R. The fastening portion 94 is located at aposition lower than the fastening portion 93.

The configuration that the fastening portion 94 fastens the right sidecover 61R and the air cleaner 51 is substantially the same as theconfiguration that the fastening portion 92 fastens the left side cover61L and the air cleaner 51.

4. Profile of Cross Member 8

Reference is made to FIGS. 7, 8, 14, and 15. FIG. 14 is a perspectiveview of the seat frame 6, the cross member 8, and the bar 9. FIG. 15 isa rear view of the cross member 8.

The cross member 8 is configured with a thin curved plate member. Eachelement of the cross member 8 is long in the longitudinal direction Xand short in the up-down direction Z. In other words, the cross member 8has a length in the up-down direction Z smaller than that in thelongitudinal direction X in its cross section perpendicular to thetransverse direction Y.

Reference is made to FIGS. 7 and 15. An area of the cross member 8 inthe rear view of the vehicle is smaller than an area of the cross member8 in the plan view of the vehicle. More specifically, the cross member 8has a projection area projected on an imaginary plane perpendicular tothe longitudinal direction X that is smaller than a projection areaprojected on an imaginary plane perpendicular to the up-down directionZ.

Reference is made to FIGS. 14 and 15. The cross member 8 has a shapecurved to be convex upward in the rear view of the vehicle. The crossmember 8 includes a right part 11, a left part 12, and an upper part 13.The right part 11 is located rightward of the vehicle center plane C.The right part 11 is connected to the right seat frame 6R. The rightpart 11 extends upward from the right seat frame 6R. The left part 12 islocated leftward of the vehicle center plane C. The left part 12 isconnected to the left seat frame 6L. The left part 12 extends upwardfrom the left seat frame 6L. The upper part 13 is located at a positionhigher than the right seat frame 6R and the left seat frame 6L. Theupper part 13 connects the right part 11 with the left part 12. Theupper part 13 is connected to an upper end of the right part 11 and anupper end of the left part 12. The upper part 13 extends from the rightpart 11 to the left part 12. The upper part 13 extends in the transversedirection Y.

The cross member 8 includes a right reinforcement portion 14. The rightreinforcement portion 14 is located rightward of the vehicle centerplane C. The right reinforcement portion 14 is located more leftwardthan the right part 11. The right reinforcement portion 14 connects theright seat frame 6R with the upper part 13. The right reinforcementportion 14 is also connected with the right part 11. More specifically,the right reinforcement portion 14 extends leftward and upward. Theright reinforcement portion 14 includes a lower end and an upper end.The lower end of the right reinforcement portion 14 is connected to theright seat frame 6R. The lower end of the right reinforcement portion 14is also connected to the right part 11. The upper end of the rightreinforcement portion 14 is connected to the upper part 13. The upperend of the right reinforcement portion 14 is located more leftward thanthe upper end of the right part 11.

The cross member 8 has a right hole 15. The right hole 15 is locatedrightward of the vehicle center plane C. The right hole 15 is formedwith the right part 11, the upper part 13, and the right reinforcementportion 14. The right hole 15 is surrounded by the right part 11, theupper part 13, and the right reinforcement portion 14. The right hole 15extends in the substantially longitudinal direction X.

The cross member 8 includes a left reinforcement portion 16. The leftreinforcement portion 16 is located leftward of the vehicle center planeC. The left reinforcement portion 16 is located more rightward than theleft part 12. The left reinforcement portion 16 connects the left seatframe 6L with the upper part 13. The left reinforcement portion 16 isalso connected with the left part 12. More specifically, the leftreinforcement portion 16 extends rightward and upward. The leftreinforcement portion 16 includes a lower end and an upper end. Thelower end of the left reinforcement portion 16 is connected to the leftseat frame 6L. The lower end of the left reinforcement portion 16 isalso connected to the left part 12. The upper end of the leftreinforcement portion 16 is connected to the upper part 13. The upperend of the left reinforcement portion 16 is located more rightward thanthe upper end of the left part 12.

The cross member 8 has a left hole 17. The left hole 17 is locatedleftward of the vehicle center plane C. The left hole 17 is formed withthe left part 12, the upper part 13, and the left reinforcement portion16. The left hole 17 is surrounded by the left part 12, the upper part13, and the left reinforcement portion 16. The left hole 17 extends inthe substantially longitudinal direction X.

Here in FIGS. 6 and 7, the illustration of the right hole 15 and theleft hole 17 is omitted.

Reference is made to FIG. 8. FIG. 8 shows an axis A of the right hole15. The axis A is substantially parallel to the longitudinal directionX. More specifically, the axis A extends rearward and upward. The axis Ais perpendicular to the transverse direction Y. The axis A is parallelto an axis of the left hole 17. The axis A conforms to the axis of theleft hole 17 in the side view of the vehicle.

The cross member 8 is manufactured, for example, by extrusion. The crossmember 8 has a cross-sectional shape which is substantially uniformalong an extrusion direction. The axis A conforms to the extrusiondirection of the cross member 8.

5. Support Configuration of Seat 31

The support configuration of the seat 31 includes a configuration ofreceiving a load of the seat 31, a configuration of positioning the seat31 in the horizontal direction, and a configuration of regulatingmovement of the seat 31. The following describes these configurations.

5-1. Configuration of Receiving Load of Seat 31

FIG. 16 is a perspective view of a base of the seat 31. FIG. 17 is abottom view of the seat 31. The seat 31 includes a base 32. The base 32contacts the intake passage 81. The base 32 contacts an upper part ofthe intake passage 81.

The seat 31 includes a first load transmitting portion 33, a second loadtransmitting portion 34, and a third load transmitting portion 35. Thefirst load transmitting portion 33, the second load transmitting portion34, and the third load transmitting portion 35 are located on the base32 of the seat 31. The second load transmitting portion 34 is locatedmore rearward than the first load transmitting portion 33. The thirdload transmitting portion 35 is located more forward than the first loadtransmitting portion 33.

The first load transmitting portion 33 includes a plane substantiallyhorizontal and directed downward. Likewise, the second load transmittingportion 34 and the third load transmitting portion 35 each include aplane substantially horizontal and directed downward.

The first load transmitting portion 33 includes a right part 33R and aleft part 33L. The second load transmitting portion 34 includes a rightpart 34R and a left part 34L. The third load transmitting portion 35includes a right part 35R and a left part 35L. The right parts 33R, 34R,and 35R are each located rightward of the vehicle center plane C. Theleft parts 33L, 34L, and 35L are each located leftward of the vehiclecenter plane C. The right part 33R and the left part 33L are arrangedside by side in the transverse direction Y. The right part 34R and theleft part 34L are arranged side by side in the transverse direction Y.The right part 35R and the left part 35L are arranged side by side inthe transverse direction Y.

At least part of the right part 33R of the first load transmittingportion 33 is located more rightward than the second load transmittingportion 34. At least part of the left part 33L of the first transmittingportion 33 is located more leftward than the second load transmittingportion 34. At least part of the right part 35R of the third loadtransmitting portion 35 is located more rightward than the first loadtransmitting portion 33 and the second load transmitting portion 34. Atleast part of the left part 35L of the third load transmitting portion35 is located more leftward than the first load transmitting portion 33and the second load transmitting portion 34.

FIG. 18 is a plan view of the air cleaner 51 and the rear fender 71.FIG. 18 shows the first load transmitting portion 33, the second loadtransmitting portion 34, and the third load transmitting portion 35 bydotted lines. FIG. 18 shows the inlet port 83 by dotted lines. The firstload transmitting portion 33, the second load transmitting portion 34,and the third load transmitting portion 35 are located more forward thanthe right inlet port 83R and the left inlet port 83L in the plan view ofthe vehicle. The first load transmitting portion 33 and the second loadtransmitting portion 34 are located more rearward than the air cleaner51 in the plan view of the vehicle. The third load transmitting portion35 overlaps the air cleaner 51 in the plan view of the vehicle. Part ofthe third load transmitting portion 35 overlaps the air cleaner element52 in the plan view of the vehicle.

The second load transmitting portion 34 is located adjacent to the inletport 83 in the plan view of the vehicle. The second load transmittingportion 34 is located leftward of the right inlet port 83R and rightwardof the left inlet port 83L in the plan view of the vehicle. Morespecifically, at least part of the right part 34R of the second loadtransmitting portion 34 is located more leftward than the right inletport 83R. At least part of the left part 34L of the second loadtransmitting portion 34 is located more rightward than the left inletport 83L. The right inlet port 83R, the second load transmitting portion34, and the left inlet port 83L are arranged side by side in thetransverse direction Y in the plan view of the vehicle.

At least part of the right inlet port 83R is located more rightward thanthe first load transmitting portion 33, the second load transmittingportion 34, and the third load transmitting portion 35. At least part ofthe left inlet port 83L is located more leftward than the first loadtransmitting portion 33, the second load transmitting portion 34, andthe third load transmitting portion 35.

Reference is made to FIGS. 7 and 15. The cross member 8 includes a loadreceiver 18. The load receiver 18 is located on the upper part 13 of thecross member 8. The load receiver 18 includes a plane substantiallyhorizontal and directed upward. The load receiver 18 is located at aposition overlapping the first load transmitting portion 33 in the planview of the vehicle.

The load receiver 18 includes a right part 18R and a left part 18L. Theright part 18R is located rightward of the vehicle center plane C. Theleft part 18L is located leftward of the vehicle center plane C.

FIG. 19 is a sectional view taken on line XIX-XIX of FIG. 8. The lineXIX-XIX of FIG. 8 is perpendicular to the axis A of the right hole 15.The load receiver 18 of the cross member 8 is located below the firstload transmitting portion 33 of the seat 31. The load receiver 18contacts the first load transmitting portion 33.

Specifically, the right part 18R is located below the right part 33R.The right part 18R is in surface contact with the right part 33R. Theleft part 18L is located below the left part 33L. The left part 18L isin surface contact with the left part 33L.

The load receiver 18 receives a load of the seat 31 via the first loadtransmitting portion 33. The load of the seat 31 applied to the loadreceiver 18 is a downward external force acting on the load receiver 18.In other words, the load that the load receiver 18 receives from theseat 31 is a downward external force exerted on the load receiver 18.

Moreover, the load receiver 18 restricts movement of the first loadtransmitting portion 33 to a position lower than the load receiver 18.That is, the load receiver 18 restricts downward movement of the seat 31relative to the cross member 8. However, the load receiver 18 allowsupward movement of the seat 31 relative to the cross member 8.

Reference is made to FIGS. 18 and 20. FIG. 20 is a side view of the rearfender 71. FIG. 20 shows the inlet port 83 by dotted lines.

The rear fender 71 includes a load receiver 77. The load receiver 77 islocated on a top face of the rear fender 71. The load receiver 77includes a plane substantially horizontal and directed upward. The loadreceiver 77 is located at a position overlapping the second loadtransmitting portion 34 in the plan view of the vehicle.

The load receiver 77 is located adjacent to the inlet port 83 in theplan view of the vehicle. At least part of the load receiver 77 islocated leftward of the right inlet port 83R and rightward of the leftinlet port 83L in the plan view of the vehicle. The right inlet port83R, the load receiver 77, and the left inlet port 83L are arranged sideby side in the transverse direction Y in the plan view of the vehicle.The load receiver 77 extends from a position rightward of the vehiclecenter plane C to a position leftward of the vehicle center plane C.

FIG. 21 is a sectional view taken on line XXI-XXI of FIG. 9. FIG. 21shows the inlet port 83 by dotted lines. The load receiver 77 of therear fender 71 is located below the second load transmitting portion 34of the seat 31. The load receiver 77 contacts the second loadtransmitting portion 34.

Specifically, the load receiver 77 is located below the right part 34Rand the left part 34L. The load receiver 77 is in surface contact withthe right part 34R and the left part 34L.

The load receiver 77 receives a load of the seat 31 via the second loadtransmitting portion 34. The load of the seat 31 applied to the loadreceiver 77 is a downward external force acting on the load receiver 77.

Moreover, the load receiver 77 restricts movement of the second loadtransmitting portion 34 to a position lower than the load receiver 77.That is, the load receiver 77 restricts downward movement of the seat 31relative to the rear fender 71. However, the load receiver 77 allowsupward movement of the seat 31 relative to the rear fender 71.

FIG. 22 is a sectional view taken on line XXII-XXII of FIG. 9. The seatframe 6 is located below the third load transmitting portion 35. Theseat frame 6 contacts the third load transmitting portion 35.

Specifically, the right seat frame 6R includes a plane substantiallyhorizontal and directed upward. The right seat frame 6R is located belowthe right part 35R. The right seat frame 6R is in surface contact withthe right part 35R. The left seat frame 6L includes a planesubstantially horizontal and directed upward. The left seat frame 6L islocated below the left part 35L. The left seat frame 6L is in surfacecontact with the left part 35L.

The seat frame 6 receives a load of the seat 31 via the third loadtransmitting portion 35. The load of the seat 31 applied to the seatframe 6 is a downward external force acting on the seat frame 6.

Moreover, the seat frame 6 restricts movement of the third loadtransmitting portion 35 to a position lower than the seat frame 6. Thatis, the seat frame 6 restricts downward movement of the seat 31 relativeto the seat frame 6. However, the seat frame 6 permits upward movementof the seat 31 relative to the seat frame 6.

5-2. Configuration of Positioning Seat 31 in Horizontal Direction

Reference is made to FIGS. 16 and 17. The seat 31 includes a horizontalposition determining portion 37. The horizontal position determiningportion 37 is located on the base 32 of the seat 31. The horizontalposition determining portion 37 is located adjacent to the first loadtransmitting portion 33.

The horizontal position determining portion 37 includes a right positiondetermining portion 37 a. The right position determining portion 37 aincludes a plane substantially perpendicular relative to the transversedirection Y and directed rightward. The right position determiningportion 37 a is located rightward of the vehicle center plane C. Theright position determining portion 37 a extends downward, for example,from a left edge of the right part 33R of the first load transmittingportion 33.

The horizontal position determining portion 37 includes a left positiondetermining portion 37 b. The left position determining portion 37 bincludes a plane substantially perpendicular relative to the transversedirection Y and directed leftward. The left position determining portion37 b is located leftward of the vehicle center plane C. The rightposition determining portion 37 a and the left position determiningportion 37 b are arranged side by side in the transverse direction Y inthe plan view of the vehicle. The left position determining portion 37 bextends downward, for example, from a right edge of the left part 33L ofthe first load transmitting portion 33.

The horizontal position determining portion 37 includes a front positiondetermining portion 37 c. The front position determining portion 37 cincludes a plane substantially perpendicular relative to thelongitudinal direction X and directed rearward. The front positiondetermining portion 37 c includes a right part 37 cR and a left part 37cL. The right part 37 cR is located rightward of the vehicle centerplane C. The right part 37R extends downward, for example, from a frontedge of the right part 33R of the first load transmitting portion 33.The left part 37 cL is located leftward of the vehicle center plane C.The left part 37 cL extends downward, for example, from a front edge ofthe left part 33L of the first load transmitting portion 33.

The horizontal position determining portion 37 includes a rear positiondetermining portion 37 d. The rear position determining portion 37 d islocated more rearward than the front position determining portion 37 c.The front position determining portion 37 c and the rear positiondetermining portion 37 d align in the longitudinal direction X in theplan view of the vehicle. The rear position determining portion 37 dincludes a plane substantially perpendicular relative to thelongitudinal direction X and directed forward. The rear positiondetermining portion 37 d includes a right part 37 dR and a left part 37dL. The right part 37 dR is located rightward of the vehicle centerplane C. The right part 37 dR extends downward, for example, from a rearedge of the right part 33R of the first load transmitting portion 33.The left part 37 dL is located leftward of the vehicle center plane C.The left part 37 dL extends downward, for example, from a rear edge ofthe left part 33L of the first load transmitting portion 33.

FIG. 18 shows the horizontal position determining portion 37 by dottedlines. The horizontal position determining portion 37 is located moreforward than the inlet port 83 in the plan view of the vehicle. Thehorizontal position determining portion 37 is located more rearward thanthe air cleaner 51. The horizontal position determining portion 37 islocated more leftward than the right inlet port 83R and more rightwardthan the left inlet port 83L in the plan view of the vehicle. At leastpart of the right inlet port 83R is located more rightward than thehorizontal position determining portion 37. At least part of the leftinlet port 83L is located more leftward than the horizontal positiondetermining portion 37.

Reference is made to FIGS. 7 and 15. The cross member 8 includes ahorizontal position determining portion 19. The horizontal positiondetermining portion 19 is located on the upper part 13 of the crossmember 8. The horizontal position determining portion 19 is located atsubstantially the same position as the horizontal position determiningportion 37 in the plan view of the vehicle. The horizontal positiondetermining portion 19 contacts the horizontal position determiningportion 37. The horizontal position determining portion 19 restrictsmovement of the seat 31 in the substantially horizontal directionrelative to the cross member 8. The following describes a constructionof the horizontal position determining portion 19 in detail.

The horizontal position determining portion 19 includes a right positiondetermining portion 19 a. The right position determining portion 19 aincludes a plane substantially perpendicular relative to the transversedirection Y and directed leftward. The right position determiningportion 19 a is located rightward of the vehicle center plane C. Theright position determining portion 19 a extends downward, for example,from a left edge of the right part 18R of the load receiver 18.

The horizontal position determining portion 19 includes a left positiondetermining portion 19 b. The left position determining portion 19 bincludes a plane substantially perpendicular relative to the transversedirection Y and directed rightward. The left position determiningportion 19 b is located leftward of the vehicle center plane C. The leftposition determining portion 19 b extends downward, for example, from aright edge of the left part 18L of the load receiver 18.

Reference is made to FIG. 7. The horizontal position determining portion19 includes a front position determining portion 19 c. The frontposition determining portion 19 c includes a plane substantiallyperpendicular relative to the longitudinal direction X and directedforward. The front position determining portion 19 c includes a rightpart 19 cR and a left part 19 cL. The right part 19 cR is locatedrightward of the vehicle center plane C. The right part 19 cR extendsdownward, for example, from a front edge of the right part 18R. The leftpart 19 dL is located leftward of the vehicle center plane C. The leftpart 19 cL extends downward, for example, from a front edge of the leftpart 18L, for example.

Reference is made to FIGS. 7 and 15. The horizontal position determiningportion 19 includes a rear position determining portion 19 d. The rearposition determining portion 19 d is located more rearward than thefront position determining portion 19 c. The rear position determiningportion 19 d includes a plane substantially perpendicular relative tothe longitudinal direction X and directed rearward. The rear positiondetermining portion 19 d includes a right part 19 dR and a left part 19dL. The right part 19 dR is located rightward of the vehicle centerplane C. The right part 19 dR extends downward from a rear edge of theright part 18R, for example. The left part 19 dL is located leftward ofthe vehicle center plane C. The left part 19 dL extends downward, forexample, from a rear edge of the left part 18L, for example.

Reference is made to FIG. 19. The right position determining portion 19a is located rightward of the right position determining portion 37 a.The right position determining portion 19 a contacts the right positiondetermining portion 37 a. Specifically, the right position determiningportion 19 a is in surface contact with the right position determiningportion 37 a. Thereby, the right position determining portion 19 arestricts movement of the right position determining portion 37 a to aposition more rightward than the right position determining portion 19a. That is, the right position determining portion 19 a restrictsrightward movement of the seat 31 relative to the cross member 8.

The left position determining portion 19 b is located leftward of theleft position determining portion 37 b. The left position determiningportion 19 b contacts the left position determining portion 37 b.Specifically, the left position determining portion 19 b is in surfacecontact with the left position determining portion 37 b. Thereby, theleft position determining portion 19 b restricts movement of the leftposition determining portion 37 b to a position more leftward than theleft position determining portion 19 b. That is, the left positiondetermining portion 37 b restricts leftward movement of the seat 31relative to the cross member 8.

FIG. 23 is a sectional view taken on line XXIII-XXIII of FIG. 19. Thefront position determining portion 19 c is located behind the frontposition determining portion 37 c. The front position determiningportion 19 c contacts the front position determining portion 37 c.Specifically, the left part 19 cL is located behind the left part 37 cL.The left part 19 cL is in surface contact with the left part 37 cL. Theright part 19 cR is located behind the right part 37 cR, whichillustration is omitted. The right part 19 cR is in surface contact withthe right part 37 cR. Thereby, the front position determining portion 19c restricts movement of the front position determining portion 37 c to aposition more rearward than the front position determining portion 19 c.That is, the front position determining portion 19 c restricts rearwardmovement of the seat 31 relative to the cross member 8.

The rear position determining portion 19 d is located in front of therear position determining portion 37 d. The rear position determiningportion 19 d contacts the rear position determining portion 37 d.Specifically, the left part 19 dL is located in front of the left part37 dL. The left part 19 dL is in surface contact with the left part 37dL. The right part 19 dR are located forward of the right part 37 dR,which illustration is omitted. The right part 19 dR is in surfacecontact with the right part 37 dR. Thereby, the rear positiondetermining portion 19 d restricts movement of the rear positiondetermining portion 37 d to a position more forward than the rearposition determining portion 19 d. That is, the rear positiondetermining portion 19 d restricts forward movement of the seat 31relative to the cross member 8.

In summary, the right position determining portion 19 a and the leftposition determining portion 19 b restrict movement of the seat 31 inthe transverse direction Y relative to the cross member 8. The rightposition determining portion 19 a and the left position determiningportion 19 b position the seat 31 in the transverse direction Y. Thefront position determining portion 19 c and the rear positiondetermining portion 19 d restrict movement of the seat 31 in thelongitudinal direction X relative to the cross member 8. The frontposition determining portion 19 c and the rear position determiningportion 19 d position the seat 31 in the longitudinal direction X.Consequently, the horizontal position determining portion 19 restrictsmovement of the seat 31 relative to the cross member 8 in the transversedirection Y and the longitudinal direction X (i.e., horizontaldirection). That is, the horizontal position determining portion 19positions the seat 31 in the horizontal direction.

As shown in FIG. 23, the cross member 8 is flat in a cross sectionperpendicular to the transverse direction Y. More specifically, thecross member 8 has a length in the longitudinal direction X larger thanthat in the up-down direction Z in its cross section perpendicular tothe transverse direction Y.

The horizontal position determining portion 37 corresponds to oneexample of the first horizontal position determining portion in thepresent invention. The horizontal position determining portion 19corresponds to one example of the second horizontal position determiningportion in the present invention.

5-3. Configuration of Regulating Movement of Seat 31

Reference is made to FIG. 9. The straddled vehicle 1 includes a positionregulator 101. The position regulator 101 joins the seat 31 with therear fender 71. Specifically, the position regulator 101 couples therear part of the seat 31 with the rear fender 71. The position regulator101 regulates movement of the seat 31 relative to the rear fender 71.Especially, the position regulator 101 regulates upward movement of theseat 31 relative to the rear fender 71. The position regulator 101restricts rising of the seat 31 relative to the rear fender 71.

The position regulator 101 is located on vehicle center plane C. Theposition regulator 101 is located below the seat 31. The positionregulator 101 is located above the rear fender 71. The positionregulator 101 is located more rearward than the air cleaner 51. Theposition regulator 101 is located more rearward than the cross member 8.

FIG. 24 is a sectional view of the position regulator 101 along thevehicle center plane C. The position regulator 101 includes a holder102, an elastic member 107, a stay 108, a coupling portion 109, and afastening portion 111. The holder 102 is supported by the seat 31. Theholder 102 holds the elastic member 107. Thereby, the elastic member 107is supported by the seat 31 via the holder 102. The elastic member 107is elastically deformable. The stay 108 is supported by the elasticmember 107. The stay 108 supports the coupling portion 109. Thereby, thecoupling portion 109 is supported by the elastic member 107 via the stay108. The fastening portion 111 fastens the coupling portion 109 and therear fender 71. Thereby, the seat 31 is joined to the rear fender 71.

The following describes the position regulator 101 in detail.

The holder 102 is supported by the seat 31. The holder 102 is supportedon the base 32 of the seat 31. The holder 102 extends downward from theseat 31.

The holder 102 includes a fastening portion 103. The fastening portion103 is joined to the seat 31. The fastening portion 103 is located onthe vehicle center plane C.

The fastening portion 103 includes a nut 104. The nut 104 is located onthe vehicle center plane C. The nut 104 is fixed to the base 32 of theseat 31. The nut 104 is, for example, an insert nut.

The fastening portion 103 includes a bolt 105. The bolt 105 is coupledto the nut 104. More specifically, the bolt 105 includes a screw 105 aand a head 105 b. The screw 105 a extends in the substantially up-downdirection Z. That is, the bolt 105 has an axis substantially parallel tothe up-down direction Z. The screw 105 a has a first end and a secondend. The first end of the screw 105 a is coupled to the nut 104. Thesecond end of the screw 105 a is connected to the head 105 b. The head105 b is located below the nut 104. The head 105 b is located on thevehicle center plane C.

The holder 102 includes a collar 106. The collar 106 is supported by thefastening portion 103. More specifically, the collar 106 includes acylinder 106 a and a flange 106 b. The cylinder 106 a has a cylindricalshape. The cylinder 106 a has a through hole. The through hole of thecylinder 106 a has an inner diameter larger than an outer diameter ofthe screw 105 a. The screw 105 a is inserted into the through hole ofthe cylinder 106 a. In other words, the cylinder 106 a is fitted outsideof the screw 105 a. The cylinder 106 a has a first end and a second end.The first end of the cylinder 106 a contacts the nut 104. The second endof the cylinder 106 a is connected to the flange 106 b. The flange 106 bextends outward from the second end of the cylinder 106 a. The flange106 b contacts the head 105 b. Specifically, a lower face of the flange106 b contacts the head 105 b. The bolt 105 and the nut 104 grip thecollar 106.

The elastic member 107 is located below the seat 31. The elastic member107 is located above the rear fender 71. The elastic member 107 islocated on the vehicle center plane C. The elastic member 107 has a tubeshape. In other words, the elastic member 107 has an annular shape. Theelastic member 107 includes a through hole 107 a and an outercircumferential face 107 b. The through hole 107 a is formed at thecenter of the elastic member 107. The through hole 107 a has an innerdiameter substantially equal to an outer diameter of the cylinder 106 aof the collar 106. The material of the elastic member 107 is, forexample, rubber or resin. The elastic member 107 is, for example, agrommet or a bushing.

The elastic member 107 is held by the holder 102. The holder 102 isinserted into the through hole 107 a of the elastic member 107.Specifically, the elastic member 107 is attached to the collar 106. Theelastic member 107 is fitted outside of the cylinder 106 a of the collar106. In other words, the cylinder 106 a of the collar 106 is insertedinto the through hole 107 a of the elastic member 107. The elasticmember 107 closely contacts the cylinder 106 a. An inner circumferentialface of the through hole 107 a of the elastic member 107 is in closecontact with an outer circumferential face of the cylinder 106 a.Moreover, the elastic member 107 contacts the nut 104. The elasticmember 107 contacts the flange 106 b (more specifically, top face of theflange 106 b).

FIG. 25 is a perspective view of the stay 108. The stay 108 includes aplate portion 108 a and a through hole 108 b. The through hole 108 b isformed in the plate portion 108 a. The through hole 108 b has an innerdiameter substantially equal to an outer diameter of the elastic member107. The stay 108 is, for example, made of metal.

Reference is made to FIG. 24. The stay 108 is located below the seat 31.The stay 108 is located above the rear fender 71. The stay 108 isconnected to the outer circumferential face 107 b of the elastic member107. The stay 108 is fitted to the outer circumferential face 107 b ofthe elastic member 107. In other words, the elastic member 107 isinserted into the through hole 108 b of the stay 108. The stay 108closely contacts to the elastic member 107. More specifically, an innercircumferential face of the through hole 108 b of the stay 108 is inclose contact with the outer circumferential face 107 b of the elasticmember 107. Note that the elastic member 107 may include a groove. Thegroove is formed in the outer circumferential face 107 b of the elasticmember 107. The groove extends in a circumferential direction. The plateportion 108 a cuts into the groove, whereby the elastic member 107 cansupport the stay 108 conveniently.

The stay 108 extends rearward from the elastic member 107. Morespecifically, the stay 108 extends rearward and upward from the elasticmember 107.

The elastic member 107 is elastically deformed, whereby the stay 108 isslightly movable relative to the elastic member 107. FIG. 24 exemplarilyshows an angle θ of the stay 108 relative to the elastic member 107. Theangle θ is variable depending on elastic deformation of the elasticmember 107, for example. The elastic deformation of the elastic member107 allows a rear part of the stay 108 to swing in the up-down directionZ relative to the elastic member 107 (i.e., seat 31), for example.

The coupling portion 109 is supported by the stay 108. The couplingportion 109 is supported on the rear part of the stay 108. The couplingportion 109 is fixed to the stay 108. The coupling portion 109 islocated below the seat 31. The coupling portion 109 is located above therear fender 71. The coupling portion 109 is located on the vehiclecenter plane C. The coupling portion 109 is located more rearward thanthe holder 102. The coupling portion 109 is located more rearward thanthe elastic member 107. The coupling portion 109 is located higher thanthe elastic member 107.

The elastic member 107 is elastically deformed, whereby the couplingportion 109 is slightly movable relative to the elastic member 107. Theelastic deformation of the elastic member 107 allows the couplingportion 109 to move in the up-down direction Z relative to the elasticmember 107, for example. That is, the elastic member 107 is elasticallydeformed, whereby the coupling portion 109 is movable in the up-downdirection Z relative to the seat 31.

Reference is made to FIG. 25. The coupling portion 109 and the stay 108are formed integrally, for example. The coupling portion 109 and thestay 108 are inseparable from each other, for example. The couplingportion 109 is, for example, made of metal.

The coupling portion 109 includes a seating portion 109 a and a throughhole 109 b. The seating portion 109 a has a plate shape. The seatingportion 109 a is substantially horizontal. The through hole 109 b isformed in the seating portion 109 a. The through hole 109 b passesthrough the seating portion 109 a in the up-down direction Z.

The through hole 109 b is a long hole. The through hole 109 b has alength in a long side direction larger than a width LW of the throughhole 109 b. The through hole 109 b extends in the longitudinal directionX, for example. The long side direction of the through hole 109 b issubstantially parallel to the longitudinal direction X, for example. Thewidth LW of the through hole 109 b corresponds to a length of thethrough hole 109 b in the transverse direction Y, for example.

The through hole 109 b is a cutout hole. Specifically, the through hole109 b is opened at a perimeter edge of the seating portion 109 a. Forexample, the through hole 109 b has a front end and a rear end. The rearend of the through hole 109 b reaches a rear edge of the seating portion109 a. The rear end of the through hole 109 b is opened at the rear edgeof the seating portion 109 a. The through hole 109 b is opened rearward.The rear end of the through hole 109 b is not closed with the seatingportion 109 a. The front end of the through hole 109 b is not opened.The front end of the through hole 109 b is closed with the seatingportion 109 a.

Reference is made to FIG. 24. The through hole 109 b is located on thevehicle center plane C.

The fastening portion 111 fastens the coupling portion 109 and the rearfender 71. The fastening portion 111 is located below the seat 31. Thefastening portion 111 is located above the rear fender 71. The fasteningportion 111 is located on the vehicle center plane C. The fasteningportion 111 is located more rearward than the holder 102. The fasteningportion 111 is located more rearward than the fastening portion 103. Thefastening portions 111 and 103 align in the longitudinal direction X.The fastening portion 111 is located more rearward than the elasticmember 107.

The fastening portion 111 includes a nut 112. The nut 112 is located onthe vehicle center plane C. The nut 112 is fixed to the rear fender 71.The rear fender 71 includes a boss 78 configured to fix the nut 112. Theboss 78 has a cylindrical shape extending in the up-down direction Z.The nut 112 is embedded into a center part in a top face of the boss 78.The nut 112 is, for example, an insert nut.

The fastening portion 111 includes a bolt 113. The bolt 113 is coupledto the nut 112. The bolt 113 is so-called a screw with captive washer.The bolt 113 is also called a bolt with washer. The bolt 113 is alsocalled a sems screw.

FIG. 26 is a detailed view of the bolt 113. The bolt 113 includes ascrew 113 a, a shaft 113 b, and a head 113 c. The screw 113 a is coupledwith the nut 112. The shaft 113 b is connected to the screw 113 a. Thehead 113 c is connected to the shaft 113 b. An axis of the shaft 113 bconforms to an axis of the screw 113 a. The axis of the screw 113 a andthe axis of the shaft 113 b correspond to an axis of the bolt 113.

More specifically, the screw 113 a has a first end and a second end. Thefirst end of the screw 113 a is coupled with the nut 112. The second endof the screw 113 a is connected to the shaft 113 b. The shaft 113 b hasa first end and a second end. The first end of the shaft 113 b isconnected to the second end of the screw 113 a. The second end of theshaft 113 b is connected to the head 113 c.

The shaft 113 b is thinner than the screw 113 a. The shaft 113 b has anouter diameter smaller than an outer diameter of the screw 113 a. Theouter diameter of the shaft 113 b is smaller than the width LW of thethrough hole 109 b. The head 113 c has an outer diameter larger than theouter diameter of the shaft 113 b. The outer diameter of the head 113 cis larger than the width LW of the through hole 109 b.

The bolt 113 includes a washer 113 d. The washer 113 d is, for example,a plain washer. The washer 113 d has an outer diameter larger than thewidth LW of the through hole 109 b. The washer 113 d has a through holenot shown. The through hole of the washer 113 d has an inner diameterlarger than the outer diameter of the shaft 113 b. The inner diameter ofthe through hole of the washer 113 d is smaller than the outer diameterof the screw 113 a. The inner diameter of the through hole of the washer113 d is smaller than the outer diameter of the head 113 c.

The washer 113 d is attached to the shaft 113 b. The washer 113 d isfitted outside of the shaft 113 b. In other words, the shaft 113 b isinserted into the through hole of the washer 113 d. The washer 113 d ismovable between the head 113 c and the screw 113 a. Specifically, thewasher 113 d is movable relative to the shaft 113 b in a direction ofthe axis of the shaft 113 b. The washer 113 d is rotatable relative tothe shaft 113 b around the axis of the shaft 113 b. Here, the washer 113d is not removable from the shaft 113 b. The screw 113 a and the head113 c restrict movement of the washer 113 d. A range where the washer113 d is movable in the direction of the axis of the shaft 113 b islimited to a range from the first end of the shaft 113 b to the secondend of the shaft 113 b.

The bolt 113 includes a distal end 113 e. The distal end 113 e isconnected to the screw 113 a. The distal end 113 e is connected to thefirst end of the screw 113 a. The distal end 113 e extends from thescrew 113 a in the direction of the axis of the screw 113 a. The distalend 113 e has an outer diameter smaller than the outer diameter of thescrew 113 a. The outer diameter of the distal end 113 e is smaller thanan inner diameter of the nut 112. The distal end 113 e guides the screw113 a to the nut 112. The distal end 113 e is called a lead.

Reference is made to FIG. 24. The screw 113 a is screwed on the nut 112.The axis of the bolt 105 is substantially parallel to the up-downdirection Z. Specifically, the axis of the screw 113 a and the axis ofthe shaft 113 b are substantially parallel to the up-down direction Z.The head 113 c is located above the nut 112. The head 113 c is locatedon the vehicle center plane C. The shaft 113 b is located in the throughhole 109 b of the coupling portion 109. The seating portion 109 a of thecoupling portion 109 is located between the head 113 c and the washer113 d. Specifically, the seating portion 109 a is located below the head113 c and above the washer 113 d.

Since the through hole 109 b is a cutout hole, the shaft 113 b is easilyinsertable into the through hole 109 b. Specifically, the shaft 113 bpasses through the rear end of the through hole 109 b, thereby beingmovable between the outside and inside of the through hole 109 b. Forexample, in order to insert the shaft 113 b into the through hole 109 b,the shaft 113 b enters from the outside of the through hole 109 bthrough the rear end of the through hole 109 b to the inside of thethrough hole 109 b.

The through hole 109 b is a long hole. Accordingly, the shaft 113 b canbe located easily into the through hole 109 b even when at least one ofthe seat 31, the rear fender 71, and the position regulator 101 containsa dimensional error. For example, when the long side direction of thethrough hole 109 b is substantially parallel to the longitudinaldirection X, the shaft 113 b can be located easily into the through hole109 b even when at least one of the seat 31, the rear fender 71, and theposition regulator 101 contains a dimensional error in the longitudinaldirection X.

The head 113 c and the nut 112 grip the seating portion 109 a and thewasher 113 d. Specifically, the head 113 c contacts a top face of theseating portion 109 a. A lower face of the seating portion 109 acontacts a top face of the washer 113 d. A lower face of the washer 113d contacts the nut 112. When the screw 113 a is joined with the nut 112,the head 113 c presses the seating portion 109 a and the washer 113 dagainst the nut 112. Thereby, the fastening portion 111 fixes thecoupling portion 109 to the rear fender 71.

In summary, the elastic member 107 is supported by the seat 31. Thecoupling portion 109 is supported by the elastic member 107. Thefastening portion 111 fastens the coupling portion 109 to the rearfender 71. Thus, the seat 31 and the rear fender 71 are joined by theposition regulator 101. Accordingly, the position regulator 101regulates movement of the seat 31 relative to the rear fender 71.Especially, the position regulator 101 conveniently regulates upwardmovement of the rear part of the seat 31 relative to the rear fender 71.

Since the seat 31 has relatively low rigidity, the seat 31 itself islikely to be bent and warped. Accordingly, when the seat 31 receives arelatively large external force from crew members of the straddledvehicle 1, for example, the seat 31 may move relative to the rear fender71. Here, the crew members of the straddled vehicle 1 include the driverand a fellow passenger. In this case, the elastic member 107 iselastically deformed, whereby the stay 108 is moved relative to theelastic member 107. For example, the elastic member 107 is elasticallydeformed, whereby the angle θ of the stay 108 relative to the elasticmember 107 is varied. For example, when the seat 31 is moved upwardrelative to the rear fender 71, the elastic member 107 is elasticallydeformed, whereby the stay 108 swings to be directed downward relativeto the elastic member 107, and the coupling portion 109 is moveddownward relative to the seat 31. Accordingly, a load applied to thefastening portion 111 from the coupling portion 109 is smaller than theexternal force applied to the seat 31. Thus, the elastic member 107relieves the load applied to the fastening portion 111. Consequently,the fastening portion 111 does not receive an excessively large load.

The elastic member 107 also relieves the load applied to the fasteningportion 103. That is, a load applied to the fastening portion 103 fromthe stay 108 is also smaller than the external force applied to the seat31. Consequently, the fastening portion 103 does not receive anexcessively large load.

Reference is made to FIG. 18. FIG. 18 shows the position regulator 101by dotted lines. FIG. 18 omits illustration of a boss 78 of the rearfender 71 for convenience. The position regulator 101 is located moreforward than the inlet port 83 in the plan view of the vehicle. Theposition regulator 101 is located more leftward than the right inletport 83R and more rightward than the left inlet port 83L in the planview of the vehicle. The position regulator 101 is located more rearwardthan the air cleaner 51 in the plan view of the vehicle.

The position regulator 101 is located more forward than the second loadtransmitting portion 34 and the load receiver 77 in the plan view of thevehicle. The position regulator 101 is located more leftward than theright part 34R of the second load transmitting portion 34 and morerightward than the left part 34L of the second load transmitting portion34 in the plan view of the vehicle. The position regulator 101 islocated more rearward than the first load transmitting portion 33 in theplan view of the vehicle. The position regulator 101 is located moreleftward than the right part 33R of the first load transmitting portion33 and more rightward than the left part 33L of the first loadtransmitting portion 33 in the plan view of the vehicle. Thus, theposition regulator 101 is surrounded by the first load transmittingportion 33 and the second load transmitting portion 34 in the plan viewof the vehicle.

The fastening portion 111 is located adjacent to the second loadtransmitting portion 34 in the plan view of the vehicle. The fasteningportion 111 is located more leftward than the right part 34R of thesecond load transmitting portion 34 and more rightward than the leftpart 34L of the second load transmitting portion 34 in the plan view ofthe vehicle. The right part 34R, the fastening portion 111, and the leftpart 34L are arranged side by side in the transverse direction Y in theplan view of the vehicle.

FIG. 18 shows widths LR, LL, and LP. The width LR is a length of theright inlet port 83R in the transverse direction Y. The width LL is alength of the left inlet port 83L in the transverse direction Y. Thewidth LP is a length of the position regulator 101 in the transversedirection Y. FIG. 18 shows a distance D. The distance D is a distancebetween the right inlet port 83R and the left inlet port 83L in thetransverse direction Y. The distance D corresponds to a distance betweena left end of the right inlet port 83R and a right end of the left inletport 83L in the transverse direction Y.

The width LR is substantially equal to the width LL. The distance D issmaller than the width LR. The distance D is smaller than the width LL.The width LP is smaller than the width LR. The width LP is smaller thanthe width LL. The width LP is smaller than the distance D.

Reference is made to FIG. 24. The seat 31 includes a seat body 41 and athrough hole 42. The through hole 42 is formed in the seat body 41. Thethrough hole 42 passes through the seat body 41 in the up-down directionZ. The through hole 42 is provided for attachment and detachment of thefastening portion 111. Specifically, a tool for operation of the bolt113 is insertable into the through hole 42.

The through hole 42 is located above the fastening portion 111. Thethrough hole 42 is located above the bolt 113. The through hole 42 islocated above the head 113 c. The through hole 42 is located on anextension line of the axis of the bolt 113.

The through hole 42 is located on the vehicle center plane C. Thethrough hole 42 is located more rearward than the holder 102. Thethrough hole 42 is located more rearward than the elastic member 107.

In this embodiment, the through hole 42 is defined by a protectingportion 43. The protecting portion 43 is fixed to the seat body 41. Theprotecting portion 43 has a tube shape. The protecting portion 43corresponds to an inner wall of the through hole 42. The protectingportion 43 protects the seat body 41 from damages, and also protects thebolt 113 from pollution.

The through hole 42 has an inner diameter larger than the outer diameterof the head 113 c. The inner diameter of the through hole 42 is smallerthan twice the outer diameter of the head 113 c, for example.

Reference is made to FIG. 17. The through hole 42 is located near thesecond load transmitting portion 34 in the plan view of the vehicle. Thethrough hole 42 is located more leftward than the right part 34R of thesecond load transmitting portion 34 and more rightward than the leftpart 34L of the second load transmitting portion 34 in the plan view ofthe vehicle.

The through hole 42 overlaps the fastening portion 111 in the plan viewof the vehicle, which illustration is omitted. However, the through hole42 does not overlap the holder 102 or the elastic member 107 in the planview of the vehicle. The inner diameter of the through hole 42 isrelatively small.

Reference is made to FIG. 24. At least part of the head 113 c is locatedinside of the through hole 42. For example, only part of the head 113 cmay be located inside of the through hole 42. For example, the entire ofthe head 113 c may be located inside of the through hole 42. At leastpart of the head 113 c is located at a position higher than a lower endof the through hole 42. For example, only part of the head 113 c may belocated at a position higher than the lower end of the through hole 42.For example, the entire of the head 113 c may be located at a positionhigher than the lower end of the through hole 42. The head 113 c islocated at a position lower than an upper end of the through hole 42.Specifically, the entire of the head 113 c is located at a positionlower than the upper end of the through hole 42.

The through hole 42 restricts an area where the bolt 113 is movable.Strictly speaking, when at least part of the head 113 c is locatedinside of the through hole 42, the through hole 42 restricts an areawhere the bolt 113 is movable. For example, even when the bolt 113 isdetached from the nut 112, the through hole 42 restricts movement of thebolt 113 by contact of the inner wall of the through hole 42 to the head113 c. Specifically, the area where the head 113 c is movable in thesubstantially horizontal direction is restricted within the through hole42. Accordingly, an area where the shaft 113 b is movable in thesubstantially horizontal direction is also restricted. As a result, theshaft 113 b is immovable to a position more rearward than the rear endof the through hole 109 b. That is, the shaft 113 b is undetachable fromthe through hole 109 b. The shaft 113 b is kept inserted in the throughhole 109 b. A position of the through hole 109 b (especially, rear endof the through hole 109 b) is determined taking into consideration of aposition of the through hole 42 and a dimension of the bolt 113. Thus,the through hole 42 restricts the area where the bolt 113 is movable inthe substantially horizontal direction, thereby restricting detachmentof the shaft 113 b from the coupling portion 109.

Moreover, the head 113 c is located above the coupling portion 109(through hole 109 b). The outer diameter of the head 113 c is largerthan the width LW of the through hole 109 b. Thus, the head 113 c cannotpass through the through hole 109 b. Consequently, in such a state wherethe shaft 113 b is inserted into the through hole 109 b, the bolt 113does not drop off downward from the coupling portion 109 even when thebolt 113 moves in the direction of the axis of the bolt 113.

The washer 113 d is located below the coupling portion 109 (through hole109 b). The outer diameter of the washer 113 d is larger than the widthLW of the through hole 109 b. Thus, the washer 113 d cannot pass throughthe through hole 109 b. Consequently, in such a state where the shaft113 b is inserted into the through hole 109 b, the bolt 113 is notremoved upward from the coupling portion 109 even when the bolt 113moves in the direction of the axis of the bolt 113.

Thus, the bolt 113 is undetachable from the coupling portion 109 as longas the shaft 113 b is inserted into the through hole 109 b. At leastpart of the head 113 c is kept located inside of the through hole 42 aslong as the shaft 113 b is inserted into the through hole 109 b.

In summary, the through hole 42 restricts the area where the bolt 113 ismovable in the substantially horizontal direction, whereby the shaft 113b is kept inserted in the through hole 109 b. Thus, the bolt 113 isundetachable from the coupling portion 109 even when the bolt 113 isdetached from the nut 112.

Here, in order to detach the bolt 113 from the coupling portion 109, thebolt 113 is removed from the nut 112 and the bolt 105 is removed fromthe nut 104. Thereby, the elastic member 107 is separated from thefastening portion 103. Thereafter, the bolt 113, the coupling portion109, the stay 108, and the elastic member 107 are moved downwardintegrally. Thereby, the head 113 c of the bolt 113 is moved outside ofthe through hole 42. Specifically, the entire of the head 113 c is movedto a position lower than the lower end of the through hole 42. When thehead 113 c is located outside of the through hole 42, the through hole42 does not restrict the area where the head 113 c is movable in thesubstantially horizontal direction. Thereafter, the bolt 113, thecoupling portion 109, the stay 108, and the elastic member 107 are movedrearward. Thereby, the shaft 113 b is moved from inside of the throughhole 109 b to outside of the through hole 109 b through the rear end ofthe through hole 109 b. The shaft 113 b is detached from the throughhole 109 b. That is, the bolt 113 is detached from the coupling portion109.

The seat 31 further includes a cap 44. The cap 44 is attachable anddetachable to and from an upper part of the protecting portion 43. Whenthe cap 44 is attached to the protecting portion 43, the cap 44 closesthe upper part of the through hole 42. When the cap 44 is detached fromthe protecting portion 43, the upper part of the through hole 42 isopened. The cap 44 is formed integrally with the protecting portion 43,for example. For example, the cap 44 is connected to the protectingportion 43 via a bending-deformable member, for example.

The following describes attaching and detaching operation of thefastening portion 111.

Operation of removing the bolt 113 from the nut 112 is performed alongwith the following procedures. Firstly, the cap 44 is removed from theprotecting portion 43. Thereby, the upper part of the through hole 42 isopened. A tool is inserted into the through hole 42 from the above ofthe through hole 42. A tip end of the tool is brought into contact withthe head 113 c. The tool causes the bolt 113 to rotate. Thereby, thebolt 113 is removed from the nut 112. Also after the bolt 113 is removedfrom the nut 112, the shaft 113 b is kept inserted in the through hole109 b. That is, the bolt 113 is undetachable from the coupling portion109. At least part of the head 113 c is kept located inside of thethrough hole 42.

Operation of fastening the bolt 113 to the nut 112 is performed alongwith the following procedures. The cap 44 is removed from the protectingportion 43. A tool is inserted into the through hole 42 from the aboveof the through hole 42. A tip end of the tool is brought into contactwith the head 113 c. Firstly, the tool presses the bolt 113 downward.The distal end 113 e enters a hole of the nut 112, and guides the screw113 a to a suitable position. Then, the tool causes the bolt 113 torotate. Thereby, the screw 113 a is screwed on the nut 112. That is, thebolt 113 is coupled with the nut 112. Thereafter, the cap 44 is attachedto the protecting portion 43. Thereby, the upper part of the throughhole 42 is closed.

Here, even when the position of the nut 112 is invisible through thethrough hole 42, the screw 113 a is easily guidable to the nut 112 sincethe bolt 113 includes the distal end 113 e. That is, the bolt 113 iscouplable with the nut 112 easily.

The fastening portion 111 corresponds to one example of the “fasteningportion configured to fasten the coupling portion to the rear fender” inthe present invention.

Reference is made to FIGS. 16 and 17. The straddled vehicle 1 furtherincludes a hook 115 in addition to the position regulator 101. The hook115 restricts movement of the seat 31.

The hook 115 is supported by the seat 31. The hook 115 is fixed to theseat 31. The hook 115 is connected to the base 32 of the seat 31. Thehook 115 is located more forward than the third load transmittingportion 35 in the plan view of the vehicle. The hook 115 is located onthe vehicle center plane C. The hook 115 extends in a substantiallylongitudinal direction X in the plan view of the vehicle. The hook 115is formed integrally with the base 32 of the seat 31, for example.

Reference is made to FIG. 18. The hook 115 is located more forward thanthe inlet port 83. The hook 115 overlaps the air cleaner 51 in the planview of the vehicle. The hook 115 is located in front of the rear fender71 in the plan view of the vehicle.

Reference is made to FIG. 9. The hook 115 is located inside of theintake passage 81. The hook 115 is located below the seat 31. The hook115 is located below the bar 9. The hook 115 contacts the bar 9. The bar9 restricts movement of the hook 115 to a position higher than the bar9. The bar 9 restricts upward movement of the seat 31 relative to thebody frame 2. More specifically, the bar 9 restricts a front part of theseat 31 from rising relative to the body frame 2. However, the bar 9permits downward movement of the seat 31 relative to the body frame 2.

6. Arrangement of Inlet Port 83

FIG. 27 is a rear view of the cross member 8. FIG. 27 shows the rightinlet port 83R, the left inlet port 83L, the fastening portions 91 and93, and the position regulator 101 by dotted lines.

The cross member 8 is located at a position not overlapping the rightinlet port 83R or the left inlet port 83L in the rear view of thevehicle. The cross member 8 is located below the right inlet port 83Rand the left inlet port 83L in the rear view of the vehicle.

The fastening portion 91 is located at a position not overlapping theright inlet port 83R or the left inlet port 83L in the rear view of thevehicle. The fastening portion 91 is located at a position lower thanthe right inlet port 83R and the left inlet port 83L in the rear view ofthe vehicle. The fastening portion 91 is located more leftward than theright inlet port 83R and the left inlet port 83L in the rear view of thevehicle.

The fastening portion 93 is located at a position not overlapping theright inlet port 83R or the left inlet port 83L in the rear view of thevehicle. The fastening portion 93 is located at a position lower thanthe right inlet port 83R and the left inlet port 83L in the rear view ofthe vehicle. The fastening portion 93 is located more rightward than theright inlet port 83R and the left inlet port 83L in the rear view of thevehicle.

The position regulator 101 is located at a position not overlapping theright inlet port 83R or the left inlet port 83L in the rear view of thevehicle. The position regulator 101 is located at a positionsubstantially equal in level to the right inlet port 83R and the leftinlet port 83L. The position regulator 101 is located leftward of theright inlet port 83R in the rear view of the vehicle. The positionregulator 101 is located rightward of the left inlet port 83L in therear view of the vehicle.

FIG. 28 is a perspective view of the cross member 8 seen from the axis Aof the right hole 15. FIG. 28 shows the right inlet port 83R, the leftinlet port 83L, the fastening portions 91 and 93, and the positionregulator 101 by dotted lines.

When seen from the axis A of the right hole 15, the cross member 8 islocated at a position overlapping the inlet port 83 (i.e., right inletport 83R and left inlet port 83L). When seen from the axis A of theright hole 15, part of the right inlet port 83R overlaps part of theright hole 15. When seen from the axis A of the right hole 15, part ofthe left inlet port 83L overlaps part of the left hole 17.

When seen from the axis A of the right hole 15, the fastening portion 91is located at a position not overlapping the inlet port 83. When seenfrom the axis A of the right hole 15, the fastening portion 91 islocated more leftward than the inlet port 83.

When seen from the axis A of the right hole 15, the fastening portion 93is located at a position not overlapping the inlet port 83. When seenfrom the axis A of the right hole 15, the fastening portion 93 islocated more rightward than the inlet port 83.

When seen from the axis A of the right hole 15, the position regulator101 is located at a position not overlapping the inlet port 83. Whenseen from the axis A of the right hole 15, the right inlet port 83R, theposition regulator 101, and the left inlet port 83L are arranged side byside in the transverse direction Y. When seen from the axis A of theright hole 15, the position regulator 101 is located leftward of theright inlet port 83R. When seen from the axis A of the right hole 15,the position regulator 101 is located rightward of the left inlet port83L.

7. Inner Configuration of Intake Passage 81.

The straddled vehicle 1 includes various configurations for achievingsmooth gas flow within the intake passage 81. The following describesthese configurations.

Reference is made to FIGS. 16 and 17. The straddled vehicle 1 includes aright guide wall 121R and a left guide wall 121L. The right guide wall121R and the left guide wall 121L guide air within the intake passage81.

The right guide wall 121R and the left guide wall 121L are locatedinside of the intake passage 81. Specifically, the right guide wall 121Rand the left guide wall 121L are attached to the base 32 of the seat 31.The right guide wall 121R and the left guide wall 121L extend downwardfrom the base 32 of the seat 31. The right guide wall 121R and the leftguide wall 121L are formed integrally with the base 32 of the seat 31,for example.

The right guide wall 121R and the left guide wall 121L are located morerearward than the first load transmitting portion 33. That is, the rightguide wall 121R and the left guide wall 121L are located more rearwardthan the cross member 8. The right guide wall 121R and the left guidewall 121L are located more forward than the second load transmittingportion 34.

The right guide wall 121R is located rightward of the vehicle centerplane C. The left guide wall 121L is located leftward of the vehiclecenter plane C. The right guide wall 121R is located rightward of thethrough hole 42. The left guide wall 121L is located leftward of thethrough hole 42. The right guide wall 121R is connected to the rightpart 34R of the second load transmitting portion 34. The left guide wall121L is connected to the left part 34L of the second load transmittingportion 34.

The right guide wall 121R extends forward and leftward in the plan viewof the vehicle. The left guide wall 121L extends forward and rightwardin the plan view of the vehicle.

More specifically, the right guide wall 121R includes a rear part 122R,an intermediate part 123R, and a front part 124R. The rear part 122R isconnected to the right part 34R of the second load transmitting portion34. The rear part 122R extends forward and leftward from the right part34R of the second load transmitting portion 34. The intermediate part123R is connected to the rear part 122R. The intermediate part 123Rextends forward from the rear part 122R. The intermediate part 123Rextends substantially parallel to the longitudinal direction X. Thefront part 124R is connected to the intermediate part 123R. The frontpart 124R extends forward and leftward from the intermediate part 123R.

The left guide wall 121L has the same construction and shape as theright guide wall 121R except for its symmetric. That is, the left guidewall 121L includes a rear part 122L, an intermediate part 123L, and afront part 124L. The rear part 122L, the intermediate part 123L, and thefront part 124L correspond to the rear part 122R, the intermediate part123R, and the front part 124R, respectively.

The front part 124R of the right guide wall 121R is connected to thefront part 124L of the left guide wall 121L. More specifically, a frontend of the front part 124L is connected to a front end of the front part124R. A connection position of the front parts 124R and 124L is locatedon the vehicle center plane C. The right guide wall 121R and the leftguide wall 121L entirely have a substantial V-shape in the plan view ofthe vehicle.

Reference is made to FIG. 18. The right guide wall 121R and the leftguide wall 121L are located more forward than the right inlet port 83Rand the left inlet port 83L. The right guide wall 121R and the leftguide wall 121L are located more rearward than the air cleaner 51. Atleast part of the right guide wall 121R is located more leftward thanthe right inlet port 83R. At least part of the left guide wall 121L islocated more rightward than the left inlet port 83L.

The right guide wall 121R is located rightward of the position regulator101 in the plan view of the vehicle. The right guide wall 121R extendsfrom a position rightward of the position regulator 101 to a positionforward of the position regulator 101. The left guide wall 121L islocated leftward of the position regulator 101 in the plan view of thevehicle. The left guide wall 121L extends from a position leftward ofthe position regulator 101 to a position forward of the positionregulator 101. A connection position of the front part 124L of the rightguide wall 121R and the front part 124L of the left guide wall 121L islocated forward of the position regulator 101 in the plan view of thevehicle.

FIG. 29 is a sectional view taken on line XXIX-XXIX of FIG. 9. FIG. 29shows the position of the inlet port 83 by dotted lines. The right guidewall 121R (specifically, rear part 122R) is located at a positionoverlapping the right inlet port 83R. More specifically, the rear part122R is located at a position overlapping the left end of the rightinlet port 83R. The left guide wall 121L (specifically, rear part 122L)is located at a position overlapping the left inlet port 83L. Morespecifically, the rear part 122L is located at a position overlappingthe right end of the left inlet port 83L.

The right guide wall 121R is located rightward of the position regulator101. The left guide wall 121L is located leftward of the positionregulator 101. The rear part 122R is located rightward of the fasteningportion 111. Specifically, the rear part 122L is located leftward of thefastening portion 111. The rear parts 122R and 122L are located adjacentto the fastening portion 111. The rear parts 122R and 122L extend from aposition higher than the lower end of the through hole 42 to a positionlower than the lower end of the through hole 42. In FIG. 29, the rearparts 122R and 122L are not in contact with the rear fender 71. However,a large part of the rear part 122R and a large part of the rear part122L each contact the rear fender 71. Moreover, the rear parts 122R and122L contact the seat 31.

The intake passage 81 is divided into a right intake passage 81R and aleft intake passage 81L by the right guide wall 121R and the left guidewall 121L, respectively. The right intake passage 81R is locatedrightward of the right guide wall 121R and leftward of the right sidecover 61R. The right intake passage 81R extends from the front part 124Rof the right guide wall 121R to the right inlet port 83R. The leftintake passage 81L is located leftward of the left guide wall 121L andrightward of the left side cover 61L. The left intake passage 81Lextends from the front part 124L of the left guide wall 121L to the leftinlet port 83L. The right intake passage 81R and the left intake passage81L join in front of the right guide wall 121R and the left guide wall121L.

The right intake passage 81R corresponds to a flow path for air havingflowed from the right inlet port 83R into the intake passage 81. Inother words, the right intake passage 81R corresponds to a flow path forair after passing through the right inlet port 83R. The left intakepassage 81L corresponds to a flow path for air having flowed from theleft inlet port 83L into the intake passage 81. In other words, the leftintake passage 81L corresponds to a flow path for air after passingthrough the left inlet port 83L.

Air flows from outside of the straddled vehicle 1 through the rightinlet port 83R into the right intake passage 81R. Air flows from outsideof the straddled vehicle 1 through the left inlet port 83L into the leftintake passage 81L. The air having flowed in the right intake passage81R and the air having flowed in the left intake passage 81L join infront of the right guide wall 121R and the left guide wall 121L.

FIG. 30 is a sectional view taken on line XXX-XXX of FIG. 9. FIG. 30shows the position of the inlet port 83 by dotted lines. The right guidewall 121R (specifically, intermediate part 123R) is located moreleftward than the right inlet port 83R. The left guide wall 121L(specifically, intermediate part 123L) is located more rightward thanthe left inlet port 83L.

The right guide wall 121R is located rightward of the position regulator101. The left guide wall 121L is located leftward of the positionregulator 101. Specifically, the intermediate part 123R is locatedrightward of the holder 102 and the elastic member 107. The intermediatepart 123L is located leftward of the holder 102 and the elastic member107. The intermediate parts 123R and 123L are located adjacent to theholder 102 and the elastic member 107.

The intermediate part 123R contacts the seat 31 and the rear fender 71.Specifically, an upper edge of the intermediate part 123R is connectedto the base 32 of the seat 31. A lower edge of the intermediate part123R contacts the rear fender 71. Thus, the intermediate part 123Rextends from the seat 31 to the rear fender 71. The intermediate part123L also contacts the seat 31 and the rear fender 71. Specifically, anupper edge of the intermediate part 123L is connected to the base 32 ofthe seat 31. A lower edge of the intermediate part 123L contacts therear fender 71. Thus, the intermediate part 123L extends from the seat31 to the rear fender 71.

Accordingly, the intermediate parts 123R and 123L block the right intakepassage 81R from the left intake passage 81L. Moreover, the intermediateparts 123R and 123L each have a function of transmitting a load of theseat 31. The rear fender 71 receives a load of the seat 31 via theintermediate parts 123R and 123L. The rear fender 71 receives a load ofthe seat 31 adjacent to the holder 102 and the elastic member 107.

The straddled vehicle 1 includes a right projection portion 125R and aleft projection portion 125L. The right projection portion 125R and theleft projection portion 125L are located inside of the intake passage81. Specifically, the right projection portion 125R and the leftprojection portion 125L are each attached to the rear fender 71. Theright projection portion 125R and the left projection portion 125L areformed integrally with the rear fender 71, for example. The rightprojection portion 125R and the left projection portion 125L eachprotrude upward from the rear fender 71. However, the right projectionportion 125R and the left projection portion 125L do not each contactthe seat 31. The right projection portion 125R is located at a positionsubstantially same in level as a lower part of the intermediate part123R. The right projection portion 125R is located slightly rightward ofthe intermediate part 123R. When the intermediate part 123R movesrightward relative to the rear fender 71, the intermediate part 123Rcontacts the right projection portion 125R. Thereby, the rightprojection portion 125R restricts excessive rightward movement of theintermediate part 123R. The left projection portion 125L is located at aposition substantially same in level as a lower part of the intermediatepart 123L. The left projection portion 125L is located slightly leftwardof the intermediate part 123L. When the intermediate part 123L movesleftward relative to the rear fender 71, the intermediate part 123Lcontacts the left projection portion 125L. Thereby, the left projectionportion 125L restricts excessive leftward movement of the intermediatepart 123L.

Reference is made to FIG. 18. The right projection portion 125R and theleft projection portion 125L are located more forward than the rightinlet port 83R and the left inlet port 83L in the plan view of thevehicle. The right projection portion 125R and the left projectionportion 125L are located more rearward than the air cleaner 51 in theplan view of the vehicle. The right projection portion 125R and the leftprojection portion 125L are located more leftward than the right inletport 83R and more rightward than the left inlet port 83L in the planview of the vehicle. The right projection portion 125R and the leftprojection portion 125L extend substantially parallel to thelongitudinal direction X.

Reference is made to FIG. 9. The straddled vehicle 1 includes a firstfin 126 and a second fin 127. The first fin 126 and the second fin 127regulate flow of air within the intake passage 81. The first fin 126 andthe second fin 127 adjust flow of air within the intake passage 81 to bein the longitudinal direction X.

The first fin 126 and the second fin 127 are located inside of theintake passage 81. The first fin 126 is connected to the rear fender 71.The first fin 126 does not contact the seat 31. The second fin 127 islocated more forward than the first fin 126. The second fin 127 isconnected to the seat 31. The second fin 127 does not contact the rearfender 71.

Reference is made to FIG. 18. The first fin 126 and the second fin 127are located more forward than the inlet port 83 in the plan view of thevehicle. The first fin 126 and the second fin 127 are located morerearward than the air cleaner 51 in the plan view of the vehicle. Partof the second fin 127 overlaps the air cleaner 51 in the plan view ofthe vehicle.

The first fin 126 and the second fin 127 are located more forward thanthe position regulator 101 in the plan view of the vehicle. The firstfin 126 and the second fin 127 are located more forward than the rightguide wall 121R and the left guide wall 121L in the plan view of thevehicle. More specifically, part of the first fin 126 is located moreforward than the right guide wall 121R and the left guide wall 121L inthe plan view of the vehicle. The entire of the second fin 127 islocated more forward than the right guide wall 121R and the left guidewall 121L in the plan view of the vehicle.

The first fin 126 and the second fin 127 are located more leftward thanthe right inlet port 83R and more rightward than the left inlet port 83Lin the plan view of the vehicle. The first fin 126 and the second fin127 are located on the vehicle center plane C in the plan view of thevehicle. The first fin 126 and the second fin 127 are located in frontof the connection position between the front part 124R of the rightguide wall 121R and the front part 124L of the left guide wall 121L inthe plan view of the vehicle.

The first fin 126 and the second fin 127 extend in a substantiallylongitudinal direction X in the plan view of the vehicle. The first fin126 and the second fin 127 are located so as to be arranged in line inthe longitudinal direction X in the plan view of the vehicle. Part ofthe first fin 126 overlaps part of the second fin 127 in the plan viewof the vehicle. Specifically, a front part of the first fin 126 overlapsa rear part of the second fin 127 in the plan view of the vehicle.

Reference is made to FIG. 20. The first fin 126 is attached to the rearfender 71. The first fin 126 extends upward from the rear fender 71. Thefirst fin 126 is formed integrally with the rear fender 71, for example.

Reference is made to FIGS. 6 and 7. The first fin 126 overlaps the crossmember 8 in the plan view of the vehicle.

Reference is made to FIG. 10. The first fin 126 extends upward from theupper edge 71 a of the rear fender 71. The first fin 126 extends to aposition higher than the upper edge 6Ra of the right seat frame 6R andthe upper edge 6La of the left seat frame 6L. However, the first fin 126does not contact the cross member 8. The first fin 126 is located belowthe cross member 8.

Reference is made to FIGS. 16 and 17. The second fin 127 is attached tothe base 32 of the seat 31. The second fin 127 extends downward from thebase 32 of the seat 31. The second fin 127 is formed integrally with thebase 32 of the seat 31, for example.

The second fin 127 is located more forward than the first loadtransmitting portion 33 in the plan view of the vehicle. Consequently,the second fin 127 is located more forward than the cross member 8 inthe plan view of the vehicle. The second fin 127 is located morerearward than the third load transmitting portion 35 in the plan view ofthe vehicle.

The first fin 126 and the second fin 127 each correspond to one exampleof the fin in the present invention.

Reference is made to FIGS. 9, 16, and 17. The seat 31 includes a guideslope 39. The guide slope 39 is located on the base 32 of the seat 31.

The guide slope 39 contacts the upper part of the intake passage 81. Theguide slope 39 guides air to the air cleaner 51. The guide slope 39 isinclined forward and downward. The guide slope 39 curves forward anddownward.

The guide slope 39 is located more forward than the first loadtransmitting portion 33 in the plan view of the vehicle. The guide slope39 is located more forward than the first fin 126 and the second fin 127in the plan view of the vehicle. The guide slope 39 is located morerearward than the hook 115 in the plan view of the vehicle. The guideslope 39 is located more leftward than the right part 35R of the thirdload transmitting portion 35 and more rightward than the left part 35Lof the third load transmitting portion 35 in the plan view of thevehicle. The guide slope 39 is located above the air cleaner 51. Morespecifically, the guide slope 39 is located above the outercircumferential face 52 a of the air cleaner element 52.

Reference is made to FIG. 18. The guide slope 39 is located more forwardthan the inlet port 83. The guide slope 39 overlaps the air cleaner 51in the plan view of the vehicle. The guide slope 39 overlaps the outercircumferential face 52 a of the air cleaner element 52 in the plan viewof the vehicle.

Reference is made to FIGS. 16 and 17. The straddled vehicle 1 includes aright blocking wall 129R and a left blocking wall 129L. The rightblocking wall 129R and the left blocking wall 129L prevent flow of airfrom a position other than the inlet port 83 into the intake passage 81.This suppresses reduction in a substantial distance of the intakepassage 81. In other words, reduction in an effective distance of theintake passage 81 is suppressed. Specifically, it is suppressed that adistance where air runs through the intake passage 81 before being takeninto the air cleaner 51 becomes shorter than a distance between the aircleaner 51 and the inlet port 83. A distance where air actually flowswithin the intake passage 81 corresponds to the substantial distance ofthe intake passage 81 and the effective distance of the intake passage81.

The right blocking wall 129R and the left blocking wall 129L are locatedinside of the intake passage 81.

The right blocking wall 129R and the left blocking wall 129L areattached to the base 32 of the seat 31. The right blocking wall 129R andthe left blocking wall 129L extend downward from the base 32 of the seat31. The right blocking wall 129R and the left blocking wall 129L areformed integrally with the base 32 of the seat 31, for example.

The right blocking wall 129R is located rightward of the vehicle centerplane C in the plan view of the vehicle. The left blocking wall 129L islocated leftward of the vehicle center plane C in the plan view of thevehicle. The right blocking wall 129R and the left blocking wall 129Lextend in the longitudinal direction X in the plan view of the vehicle.

The right blocking wall 129R and the left blocking wall 129L are locatedmore forward than the first load transmitting portion 33. The rightblocking wall 129R and the left blocking wall 129L are located morerearward than the third load transmitting portion 35. The right blockingwall 129R is located more rightward than the first load transmittingportion 33 in the plan view of the vehicle. The left blocking wall 129Lis located more leftward than the first load transmitting portion 33 inthe plan view of the vehicle.

The right blocking wall 129R is located rightward of the second fin 127in the plan view of the vehicle. The left blocking wall 129L is locatedleftward of the second fin 127 in the plan view of the vehicle. Theright blocking wall 129R, the second fin 127, and the left blocking wall129L are arranged side by side in the transverse direction Y.

Reference is made to FIG. 18. The right blocking wall 129R is locatedmore forward than the right inlet port 83R. The left blocking wall 129Lis located more forward than the left inlet port 83L. The right blockingwall 129R and the left blocking wall 129L are located more rearward thanthe air cleaner 51 in the plan view of the vehicle. Part of the rightblocking wall 129R and part of the left blocking wall 129L overlap theair cleaner 51 in the plan view of the vehicle. Part of the rightblocking wall 129R and part of the left blocking wall 129L overlap theair cleaner element 52 in the plan view of the vehicle.

FIG. 31 is a sectional view taken on line XXXI-XXXI of FIG. 9. FIG. 32is a sectional view taken on line XXXII-XXXII of FIG. 9. The sectiontaken on the line XXXI-XXXI contains the right blocking wall 129R andthe left blocking wall 129L and is perpendicular to the longitudinaldirection X. The section taken on the line XXXII-XXXII also contains theright blocking wall 129R and the left blocking wall 129L and isperpendicular to the longitudinal direction X. In this specification,the section that contains the right blocking wall 129R and the leftblocking wall 129L and is perpendicular to the longitudinal direction Xis called a “second cross section”.

In the second cross section, the second fin 127, the right blocking wall129R, and the left blocking wall 129L extend downward from the base 32of the seat 31. In the second cross section, the right blocking wall129R is located leftward of the right seat frame 6R. The left blockingwall 129L is located rightward of the left seat frame 6L.

In the second cross section, the seat 31 includes a right edge 31 a. Inthe second cross section, the right side cover 61R includes an upperedge 61Ra. In the second cross section, the right blocking wall 129R islocated more leftward than the right edge 31 a and the upper edge 61Ra.In the second cross section, the right blocking wall 129R extends from aposition higher than the right edge 31 a and the upper edge 61Ra to aposition lower than the right edge 31 a and the upper edge 61Ra.

In the second cross section, the seat 31 includes a left edge 31 b. Inthe second cross section, the left side cover 61L includes an upper edge61La. In the second cross section, the left blocking wall 129L islocated more rightward than the left edge 31 b and the upper edge 61La.In the second cross section, the left blocking wall 129L extends from aposition higher than the left edge 31 b and the upper edge 61La to aposition lower than the left edge 31 b and the upper edge 61La.

Reference is made to FIG. 2. FIG. 2 shows the left blocking wall 129L bydotted lines. The left blocking wall 129L overlaps at least part of aboundary K between the seat 31 and the left side cover 61L in the sideview of the vehicle. Here, the boundary K extends in the substantiallylongitudinal direction X in the side view of the vehicle. The leftblocking wall 129L extends from a position higher than the boundary K toa position lower than the boundary K in the side view of the vehicle.Specifically, the left blocking wall 129L includes an upper edge 129Laand a lower edge 129Lb in the side view of the vehicle. The upper edge129La is located at a position higher than the boundary K in the sideview of the vehicle. The lower edge 129Lb is located at a position lowerthan the boundary K in the side view of the vehicle. The left blockingwall 129L extends from the upper edge 129La to the lower edge 129Lb inthe side view of the vehicle.

The right blocking wall 129R overlaps at least part of a boundarybetween the seat 31 and the right side cover 61R in the side view of thevehicle, which illustration is omitted.

8. Advantageous Effects

The right seat frame 6R is located rightward of the vehicle center planeC. The left seat frame 6L is located leftward of the vehicle centerplane C. The cross member 8 is located between the right seat frame 6Rand the left seat frame 6L. The cross member 8 connects the right seatframe 6R with the left seat frame 6L. The cross member 8 is located morerearward than the air cleaner 51. Accordingly, the cross member 8 canreinforce the right seat frame 6R and the left seat frame 6L at anappropriate position. This can enhance rigidity of the body frame 2conveniently.

The seat 31 is located above the right seat frame 6R, the left seatframe 6L, and the cross member 8. The right side cover 61R is locatedrightward of the right seat frame 6R. The left side cover 61L is locatedleftward of the left seat frame 6L. The rear fender 71 contains a partlocated below the right seat frame 6R, the left seat frame 6L, and thecross member 8. The intake passage 81 is formed below the seat 31,leftward of the right side cover 61R, rightward of the left side cover61L, and above the rear fender 71. The right inlet port 83R and the leftinlet port 83L are each located in the rear part of the intake passage81. The right inlet port 83R and the left inlet port 83L eachcommunicate the intake passage 81 and the outside of the straddledvehicle 1. The air cleaner 51 is located in the front part of the intakepassage 81. Consequently, air flows through the right inlet port 83R andthe left inlet port 83L, thereby flowing into the intake passage 81. Inthe intake passage 81, air flows from the right inlet port 83R and theleft inlet port 83L to the air cleaner 51. That is, air flows forward inthe intake passage 81.

The right inlet port 83R and the left inlet port 83L are each openedrearward. Consequently, air flows forward even when passing through theright inlet port 83R and the left inlet port 83L. Thus, air can reachthe air cleaner 51 from outside of the straddled vehicle 1 withoutsignificantly changing a direction of airflow. This can allow air to beintroduced from outside of the straddled vehicle 1 into the intakepassage 81 smoothly, and also to flow smoothly within the intake passage81.

The right inlet port 83R is located rightward of the vehicle centerplane C. The left inlet port 83L is located leftward of the vehiclecenter plane C. Consequently, the right inlet port 83R and the leftinlet port 83L enable efficient introduction of air into the intakepassage 81.

The cross member 8 is located below the seat 31. The cross member 8 islocated above part of the rear fender 71. Specifically, the cross member8 is located above the front part of the rear fender 71. The crossmember 8 is located between the right seat frame 6R and the left seatframe 6L. That is, the cross member 8 is located leftward of the rightside cover 61R and rightward of the left side cover 61L. The crossmember 8 is located more rearward than the air cleaner 51 and moreforward than the right inlet port 83R and the left inlet port 83L.Accordingly, the cross member 8 is located inside of the intake passage81. Here, the cross member 8 has the shape curved to be convex upward inthe rear view of the vehicle. This can suppress obstruction to airflowin the intake passage 81 by the cross member 8. Moreover, the crossmember 8 is located at a position not overlapping the right inlet port83R or the left inlet port 83L in the rear view of the vehicle. This canfurther suppress obstruction to airflow in the intake passage 81 by thecross member 8.

The straddled vehicle 1 includes the fastening portion 93. The fasteningportion 93 fastens the right side cover 61R to the rear fender 71. Thiscan support the right side cover 61R conveniently. The fastening portion93 is located at a position outside of the intake passage 81.Accordingly, the fastening portion 93 is not obstruction to the airflowin the intake passage 81.

The straddled vehicle 1 includes the fastening portion 91. The fasteningportion 91 fastens the left side cover 61L to the rear fender 71. Thiscan support the left side cover 61L conveniently. The fastening portion91 is located at a position inside of the intake passage 81. However,the fastening portion 91 is located at a position not overlapping theright inlet port 83R or the left inlet port 83L in the rear view of thevehicle. Accordingly, the fastening portion 91 is unlikely to beobstruction to the airflow in the intake passage 81.

As described above, the cross member 8, the fastening portion 93, andthe fastening portion 91 are unlikely to be the obstruction to theairflow in the intake passage 81. This achieves smooth airflow in theintake passage 81.

In summary, the straddled vehicle 1 according to this embodimentachieves enhanced rigidity of the body frame 2 as well as smooth airflowin the intake passage 81. Specifically, the cross member 8 can reinforcethe right seat frame 6R and the left seat frame 6L conveniently withoutsignificantly obstructing the airflow in the intake passage 81. That is,both securing a flow path cross sectional area of the intake passage 81and securing rigidity of the body frame 2 can be obtainable. Inaddition, the fastening portion 93 and the fastening portion 91 cansupport the right side cover 61R and the left side cover 61Lconveniently without significantly obstructing the airflow in the intakepassage 81.

The area of the cross member 8 in the rear view of the vehicle issmaller than the area of the cross member 8 in the plan view of thevehicle. This achieves a relatively enlarged flow path cross sectionalarea of the intake passage 81. This can further suppress obstruction toairflow in the intake passage 81 by the cross member 8.

An area of the cross member 8 in the plan view of the vehicle is largerthan an area of the cross member 8 in the rear view of the vehicle. Thiscan easily secure strength of the cross member 8. Accordingly, the crossmember 8 can enhance rigidity of the body frame 2 easily.

The cross member 8 contacts the seat 31 at a position higher than theright seat frame 6R and the left seat frame 6L. Accordingly, arelatively large region formed below the cross member 8 is usable as theintake passage 81. This can further suppress obstruction to airflow inthe intake passage 81 by the cross member 8.

If the cross member 8 does not contact the seat 31, the intake passage81 is divided into a first space and a second space with the crossmember 8. The first space is located below the seat 31 and above thecross member 8. The second space is located below the cross member 8 andabove the rear fender 71. Accordingly, airflow within the intake passage81 is separated into airflow flowing through the first space and airflowflowing through the second space with the cross member 8. Moreover, thefirst space and the second space are each relatively small.Consequently, if the cross member 8 does not contact the seat 31, air ishard to flow smoothly within the intake passage 81. In contrast to this,since the cross member 8 contacts the seat 31 in the straddled vehicle1, a relatively large space is formable below the cross member 8.Consequently, air is likely to flow more smoothly within the intakepassage 81 in the straddled vehicle 1 than the case where the crossmember 8 does not contact the seat 31.

The cross member 8 has the right hole 15 and the left hole 17. The righthole 15 and the left hole 17 each extend in the longitudinal directionX. That is, inside of the intake passage 81, the right hole 15 and theleft hole 17 each extend substantially parallel to the intake passage81. This allows air to pass through the right hole 15 and the left hole17. That is, the flow path cross sectional area of the intake passage 81can be further enlarged. This can further suppress obstruction toairflow in the intake passage 81 by the cross member 8.

When seen from the axis A of the right hole 15, part of the right inletport 83R overlaps part of the right hole 15. Thus, air having enteredfrom the right inlet port 83R into the intake passage 81 can flow in theright hole 15 smoothly. In other words, air can pass through the rightinlet port 83R and the right hole 15 successively without significantlychanging in a direction of airflow. When seen from the axis A of theright hole 15, part of the left inlet port 83L overlaps part of the lefthole 17. Thus, air having entered from the left inlet port 83L into theintake passage 81 can flow in the left hole 17 smoothly. In other words,air can pass through the left inlet port 83L and the left hole 17successively without significantly changing a direction of airflow.

The cross member 8 includes the right part 11, the left part 12, and theupper part 13. The right part 11 is connected to the right seat frame6R. The right part 11 extends upward from the right seat frame 6R. Theleft part 12 is connected to the left seat frame 6L. The left part 12extends upward from the left seat frame 6L. The upper part 13 is locatedat a position higher than the right seat frame 6R and the left seatframe 6L. The upper part 13 extends in the transverse direction Y. Theupper part 13 connects the right part 11 with the left part 12.Accordingly, the cross member 8 can easily have the shape curved to beconvex upward in the rear view of the vehicle.

The cross member 8 includes the right reinforcement portion 14 and theleft reinforcement portion 16. The right reinforcement portion 14 islocated more leftward than the right part 11. The right reinforcementportion 14 connects the right seat frame 6R with the upper part 13. Theleft reinforcement portion 16 is located more rightward than the leftpart 12. The left reinforcement portion 16 connects the left seat frame6L with the upper part 13. This can easily secure strength of the crossmember 8.

The right hole 15 is formed with the right part 11, the upper part 13,and the right reinforcement portion 14. Thus, the right hole 15 can beformed without impairing strength of the cross member 8. The left hole17 is formed with the left part 12, the upper part 13, and the leftreinforcement portion 16. Thus, the left hole 17 can be formed withoutimpairing strength of the cross member 8. Consequently, a flow pathcross sectional area of the intake passage 81 can be enlarged whilerigidity of the cross member 8 is secured.

The right reinforcement portion 14 is connected with the right part 11.The left reinforcement portion 16 is connected with the left part 12.Thus, more enhanced strength of the cross member 8 is obtainable.

The rear fender 71 includes the upper edge 71 a in the first crosssection. In the first cross section, the upper edge 71 a is curvedconvexly upward. In the first cross section, the upper edge 71 aincludes the first portion 71 a 1. In the first cross section, the firstportion 71 a 1 is located at a position higher than the lower edge 6Rbof the right seat frame 6R and the lower edge 6Lb of the left seat frame6L. Thus, the part of the rear fender 71 below the cross member 8 islocated at a relatively high position. Here, the cross member 8 has theshape curved to be convex upward in the rear view of the vehicle. Thiscan conveniently prevent a distance between the cross member 8 and therear fender 71 in the first cross section from being excessively small.That is, a flow path cross sectional area of the intake passage 81 canbe prevented from being excessively small conveniently in the firstcross section. Thus, air can flow smoothly in the intake passage 81 evenwhen the part of the rear fender 71 below the cross member 8 is locatedat a relatively high position. In other words, the shape of the crossmember 8 is more helpful for securing the flow path cross sectional areawhen the part of the rear fender 71 below the cross member 8 is locatedat a relatively high position.

The straddled vehicle 1 includes the right guide wall 121R. The rightguide wall 121R is located inside of the intake passage 81. The rightguide wall 121R is located rightward of the vehicle center plane C. Atleast part of the right guide wall 121R is located more leftward thanthe right inlet port 83R. Consequently, the right guide wall 121Renables convenient guiding of air having flowed from the right inletport 83R into the intake passage 81.

The right guide wall 121R extends forward and leftward in the plan viewof the vehicle. Thus, the right intake passage 81R expands toward theair cleaner 51. Consequently, the right guide wall 121R enablesconvenient guiding of air, having flowed from the right inlet port 83Rinto the intake passage 81, to the air cleaner 51.

Likewise, the straddled vehicle 1 includes the left guide wall 121L. Theleft guide wall 121L is located inside of the intake passage 81. Theleft guide wall 121L is located leftward of the vehicle center plane C.At least part of the left guide wall 121L is located more rightward thanthe left inlet port 83L. Consequently, the left guide wall 121L enablesconvenient guiding of air having flowed from the left inlet port 83Linto the intake passage 81.

The left guide wall 121L extends forward and rightward in the plan viewof the vehicle. Consequently, the left intake passage 81L expands towardthe air cleaner 51. Consequently, the left guide wall 121L enablesconvenient guiding of air, having flowed from the left inlet port 83Linto the intake passage 81, to the air cleaner 51.

The front part 124R of the right guide wall 121R is connected to thefront part 124L of the left guide wall 121L. This achieves convenientprevention of air from stagnating around the front part 124R of theright guide wall 121R and the front part 124L of the left guide wall121L. Consequently, air can flow smoothly also around the front part124R of the right guide wall 121R and the front part 124L of the leftguide wall 121L.

The right guide wall 121R includes the intermediate part 123R. Theintermediate part 123R contacts the seat 31 and the rear fender 71. Thisachieves reduction in a gap between the right guide wall 121R and theseat 31 and a gap between the right guide wall 121R and the rear fender71. Accordingly, air is hard to flow into the gap between the rightguide wall 121R and the seat 31 or the gap between the right guide wall121R and the rear fender 71. Consequently, the right guide wall 121Renables more convenient guiding of air having flowed from the rightinlet port 83R into the intake passage 81.

The left guide wall 121L includes the intermediate part 123L. Theintermediate part 123L contacts the seat 31 and the rear fender 71. Thisachieves reduction in a gap between the left guide wall 121L and theseat 31 and a small gap between the left guide wall 121L and the rearfender 71. Accordingly, air is hard to flow into the gap between theleft guide wall 121L and the seat 31 or the gap between the left guidewall 121L and the rear fender 71. Consequently, the left guide wall 121Lenables more convenient introduction of air having flowed from the leftinlet port 83L into the intake passage 81.

The straddled vehicle 1 includes the position regulator 101. Theposition regulator 101 joins the seat 31 with the rear fender 71. Theposition regulator 101 regulates movement of the seat 31 relative to therear fender 71. Accordingly, the seat 31 can be kept at a suitableposition.

The right guide wall 121R is located rightward of the position regulator101 in the plan view of the vehicle. The right guide wall 121R extendsfrom a position rightward of the position regulator 101 to a positionforward of the position regulator 101. Accordingly, the positionregulator 101 is located at a position apart from the right intakepassage 81R. Consequently, the position regulator 101 does not obstructflow of air having flowed from the right inlet port 83R into the intakepassage 81. This achieves smooth airflow in the right intake passage81R.

Likewise, the left guide wall 121L is located leftward of the positionregulator 101 in the plan view of the vehicle. The left guide wall 121Lextends from a position leftward of the position regulator 101 to aposition forward of the position regulator 101. Accordingly, theposition regulator 101 is located at a position apart from the leftintake passage 81L. Consequently, the position regulator 101 does notobstruct flow of air having flowed from the left inlet port 83L into theintake passage 81. This achieves smooth airflow in the left intakepassage 81L.

The position regulator 101 is located at a position not overlapping theright inlet port 83R or the left inlet port 83L in the rear view of thevehicle. This can further suppress obstruction to airflow in the intakepassage 81 by the position regulator 101.

The straddled vehicle 1 includes the first fin 126 and the second fin127. The first fin 126 and the second fin 127 are each located inside ofthe intake passage 81. The first fin 126 and the second fin 127 are eachlocated more forward than the right guide wall 121R and the left guidewall 121L. The first fin 126 and the second fin 127 are each locatedmore leftward than the right inlet port 83R and more rightward than theleft inlet port 83L. The first fin 126 and the second fin 127 eachextend in a longitudinal direction X in the plan view of the vehicle.Accordingly, the first fin 126 and the second fin 127 each enable toconveniently adjust flow of air having flowed from the right inlet port83R into the intake passage 81 as well as flow of air having flowed fromthe left inlet port 83L into the intake passage 81 to be directed towardthe air cleaner 51.

The seat 31 includes the guide slope 39. The guide slope 39 contacts theupper part of the intake passage 81. The guide slope 39 is located moreforward than the first fin 126 and the second fin 127. The guide slope39 is located above the air cleaner 51. The guide slope 39 is inclinedforward and downward. Accordingly, the guide slope 39 enables toconveniently adjust airflow in the intake passage 81 around the aircleaner 51 to be directed toward the air cleaner 51.

The straddled vehicle 1 includes the left blocking wall 129L. The leftblocking wall 129L is located inside of the intake passage 81. The leftblocking wall 129L is located leftward of the vehicle center plane C.The left blocking wall 129L is located more forward than the left inletport 83L. The left blocking wall 129L overlaps part of the boundary Kbetween the seat 31 and the left side cover 61L in the side view of thevehicle. Consequently, the left blocking wall 129L can convenientlyblock flow of air from a position more forward than the left inlet port83L into the intake passage 81 through the gap between the seat 31 andthe left side cover 61L. This suppresses reduction in the substantialdistance of the intake passage 81. Reduction in the effective distanceof the intake passage 81 is suppressed. As a result, performance of theengine 24 is conveniently maintainable.

Likewise, the straddled vehicle 1 includes the right blocking wall 129R.The right blocking wall 129R is located inside of the intake passage 81.The right blocking wall 129R is located rightward of the vehicle centerplane C. The right blocking wall 129R is located more forward than theright inlet port 83R. The right blocking wall 129R overlaps at leastpart of the boundary between the right side cover 61R and the seat 31 inthe side view of the vehicle. Consequently, the right blocking wall 129Rcan conveniently prevent flow of air from a position more forward thanthe right inlet port 83R into the intake passage 81 through the gapbetween the seat 31 and the right side cover 61R. This suppressesreduction in the substantial distance of the intake passage 81.Reduction in the effective distance of the intake passage 81 issuppressed. As a result, performance of the engine 24 is convenientlymaintainable.

The right side cover 61R and the rear fender 71 each form part of thecircumferential portion of the right inlet port 83R. That is, the rightside cover 61R does not form the entire circumferential portion of theright inlet port 83R. For example, there is no need to form a throughhole used for the right inlet port 83R in the right side cover 61R. Therear fender 71 also does not form the entire circumferential portion ofthe right inlet port 83R. Consequently, the right inlet port 83R can beformed with a relatively simple configuration. Moreover, the right inletport 83R can be made large easily.

The seat 31 also forms part of the circumferential portion of the rightinlet port 83R. Consequently, the right inlet port 83R can be formedwith a much simpler configuration. Moreover, the right inlet port 83Rcan be made large more easily.

Likewise, the left side cover 61L and the rear fender 71 each form partof a circumferential portion of the left inlet port 83L. Consequently,the left inlet port 83L can be formed with a relatively simpleconfiguration. Moreover, the left inlet port 83L can be made largeeasily.

The seat 31 also forms part of the circumferential portion of the leftinlet port 83L. Consequently, the left inlet port 83L can be formed witha much simpler configuration. Moreover, the left inlet port 83L can bemade large more easily.

The right seat frame 6R is located rightward of the vehicle center planeC. The left seat frame 6L is located leftward of the vehicle centerplane C. The cross member 8 joins the right seat frame 6R with the leftseat frame 6L. The seat 31 is located above the right seat frame 6R, theleft seat frame 6L, and the cross member 8. The seat 31 includes thefirst load transmitting portion 33. The cross member 8 includes the loadreceiver 18. The load receiver 18 contacts the first load transmittingportion 33. The load receiver 18 receives a load of the seat 31 from thefirst load transmitting portion 33. Consequently, the cross member 8 canreceive a load of the seat 31 conveniently.

The load receiver 18 is located below the first load transmittingportion 33. Consequently, the cross member 8 can conveniently restrictdownward movement of the seat 31 relative to the cross member 8.

The seat 31 includes a horizontal position determining portion 37. Thecross member 8 includes a horizontal position determining portion 19.The horizontal position determining portion 19 contacts the horizontalposition determining portion 37. The horizontal position determiningportion 19 restricts movement of the seat 31 in the substantiallyhorizontal direction relative to the cross member 8. Consequently, thecross member 8 can position the seat 31 in the substantially horizontaldirection.

The rear fender 71 contains a part located below the seat 31. Theposition regulator 101 joins the seat 31 with the rear fender 71. Theposition regulator 101 regulates upward movement of the seat 31 relativeto the rear fender 71. Consequently, the position regulator 101 and theload receiver 18 of the cross member 8 can position the seat 31 in theup-down direction Z.

In summary, the cross member 8 receives a load of the seat 31. The crossmember 8 positions the seat 31 in the substantially horizontaldirection. The cross member 8 and the position regulator 101 positionthe seat 31 in the up-down direction Z. Accordingly, the cross member 8and the position regulator 101 can conveniently position the seat 31. Asa result, the cross member 8 and the position regulator 101 can suitablysupport the seat 31.

The cross member 8 receives a load of the seat 31, whereby the load ofthe seat 31 applied to the position regulator 101 can be reducedconveniently. In other words, the cross member 8 reduces the load thatthe position regulator 101 receives from the seat 31. Consequently, thefunction of the position regulator 101 can be limited to a function ofregulating the movement of the seat 31 relative to the rear fender 71.In other words, the function of receiving the load of the seat 31 isomittable from the function of the position regulator 101. As a result,even if the position regulator 101 is relatively small, the positionregulator 101 can exert the function of regulating the movement of theseat 31 relative to the rear fender 71 sufficiently. Thus, the positionregulator 101 can be reduced in size easily. For example, the width LPof the position regulator 101 can be made smaller than the width LR ofthe right inlet port 83R. For example, the width LP of the positionregulator 101 can be made smaller than the width LL of the left inletport 83L. For example, the width LP of the position regulator 101 can bemade smaller than the distance D between the right inlet port 83R andthe left inlet port 83L.

As a result, the right inlet port 83R and the left inlet port 83L can bemade large easily. For example, the width LR of the right inlet port 83Rcan be made larger than the width LP of the position regulator 101. Forexample, the width LR of the right inlet port 83R can be made largerthan the distance D between the right inlet port 83R and the left inletport 83L. For example, the width LL of the left inlet port 83L can bemade larger than the width LP of the position regulator 101. Forexample, the width LL of the left inlet port 83L can be made larger thanthe distance D between the right inlet port 83R and the left inlet port83L.

The position regulator 101 includes the elastic member 107, the couplingportion 109, and the fastening portion 111. The elastic member 107 issupported by the seat 31. The elastic member 107 is elasticallydeformable. The coupling portion 109 is supported by the elastic member107. The fastening portion 111 fastens the coupling portion 109 and therear fender 71. Accordingly, the elastic member 107 is elasticallydeformed, whereby the coupling portion 109 is movable relative to theelastic member 107. That is, the elastic member 107 is elasticallydeformed, whereby the coupling portion 109 is movable relative to theseat 31. Consequently, the elastic member 107 is elastically deformed,whereby the load applied to the fastening portion 111 can be reducedmore largely. In other words, elastic deformation of the elastic member107 further reduces the load that the fastening portion 111 receives.Thus, the fastening portion 111 can be reduced in size easily. Forexample, a nominal diameter of the fastening portion 111 can be reducedeasily.

As described above, the cross member 8 and the elastic member 107achieve effective reduction in load applied to the fastening portion111.

The seat 31 includes the second load transmitting portion 34. The rearfender 71 includes the load receiver 77. The load receiver 77 contactsthe second load transmitting portion 34. The load receiver 77 receives aload of the seat 31 from the second load transmitting portion 34.Accordingly, the load of the seat 31 applied to the position regulator101 can be reduced more largely.

The first load transmitting portion 33 and the second load transmittingportion 34 are located around the position regulator 101 in the planview of the vehicle. Accordingly, the load applied to the positionregulator 101 can be reduced effectively.

The second load transmitting portion 34 is located adjacent to thefastening portion 111. Accordingly, the load applied to the fasteningportion 111 can be reduced effectively.

The rear fender 71 contacts the intermediate part 123R of the rightguide wall 121R and the intermediate part 123L of the left guide wall121L. The rear fender 71 receives a load of the seat 31 via theintermediate parts 123R and 123L. Accordingly, the load of the seat 31applied to the position regulator 101 can be reduced more largely.

The intermediate parts 123R and 123L are located adjacent to the holder102 (fastening portion 103). Accordingly, the load applied to the holder102 (fastening portion 103) can be reduced effectively.

Moreover, the right projection portion 125R and the left projectionportion 125L restrict the movement of the intermediate part 123R and theintermediate part 123L in the transverse direction Y. Consequently, thiscan effectively prevent a part of the seat 31 near the holder 102(fastening portion 103) from moving in the transverse direction Yrelative to the rear fender 71. Accordingly, the load applied to theholder 102 (fastening portion 103) can be reduced more effectively. Theintermediate part 123R, the intermediate part 123L, the right projectionportion 125R, and the left projection portion 125L extend in thesubstantially longitudinal direction X. Consequently, the rightprojection portion 125R and the left projection portion 125L permit themovement of the intermediate part 123R and the intermediate part 123L inthe longitudinal direction X. Thus, tolerance of the intermediate part123R, the intermediate part 123L, the right projection portion 125R, andthe left projection portion 125L in the longitudinal direction X can beabsorbed easily. Specifically, even if at least one of the intermediatepart 123R, the intermediate part 123L, the right projection portion125R, and the left projection portion 125L contains a dimensional errorin the longitudinal direction X, the intermediate part 123R, theintermediate part 123L, the right projection portion 125R, and the leftprojection portion 125L can be located suitably.

The seat 31 includes the third load transmitting portion 35. The rightseat frame 6R and the left seat frame 6L contact the third loadtransmitting portion 35. The right seat frame 6R and the left seat frame6L receive the load of the seat 31 from the third load transmittingportion 35. Accordingly, the load of the seat 31 applied to the positionregulator 101 can be reduced more largely.

The third load transmitting portion 35 is located more forward than thefirst load transmitting portion 33 and the second load transmittingportion 34. Consequently, the seat 31 can transmit the load of the seat31 in good balance. The cross member 8, the rear fender 71, the rightseat frame 6R, and the left seat frame 6L can receive the load of theseat 31 in good balance.

The elastic member 107 is elastically deformed, whereby the couplingportion 109 is movable in the up-down direction Z relative to the seat31. If the seat 31 is moved upward relative to the rear fender 71, theelastic member 107 is elastically deformed, whereby the coupling portion109 is moved downward relative to the seat 31. Accordingly, the loadapplied to the fastening portion 111 can be suppressed effectively.

The position regulator 101 is located on the vehicle center plane C inthe plan view of the vehicle. Accordingly, the position regulator 101 islocated at an appropriate position. Consequently, the position regulator101 can regulate the movement of the seat 31 relative to the rear fender71 c conveniently. As described above, the position regulator 101 isrelatively small. Accordingly, even when the position regulator 101 islocated on the vehicle center plane C, the position regulator 101 doesnot overlap the right inlet port 83R or the left inlet port 83L in therear view of the vehicle. This can conveniently suppress obstruction toairflow in the intake passage 81 by the position regulator 101.

The position regulator 101 is located more rearward than the crossmember 8. Accordingly, the position regulator 101 can effectivelyregulate the movement of the rear part of the seat 31 relative to therear fender 71.

Air flows forward in the intake passage 81. The position regulator 101is located at a position not overlapping the right inlet port 83R or theleft inlet port 83L in the rear view of the vehicle and near the rightinlet port 83R and the left inlet port 83L. This can further suppressobstruction to airflow in the intake passage 81 by the positionregulator 101.

The elastic member 107, the coupling portion 109, and the fasteningportion 111 are located below the seat 31. Thus, the elastic member 107,the coupling portion 109, and the fastening portion 111 are located atan appropriate position. Accordingly, the position regulator 101 caneffectively regulate the upward movement of the seat 31.

The straddled vehicle 1 includes the stay 108. The stay 108 is supportedby the elastic member 107. The stay 108 supports the coupling portion109. Thus, the elastic member 107 can support the coupling portion 109conveniently via the stay 108.

The stay 108 extends rearward from the elastic member 107. The couplingportion 109 and the fastening portion 111 are located more rearward thanthe elastic member 107. Accordingly, the elastic member 107 iselastically deformed, whereby the coupling portion 109 is movable easilyin the up-down direction Z relative to the elastic member 107. That is,the elastic member 107 is elastically deformed, whereby the couplingportion 109 is movable easily in the up-down direction Z relative to theseat 31. In other words, a distance where the coupling portion 109 ismoved in the up-down direction Z relative to the seat 31 is effectivelyenlarged when the elastic member 107 is elastically deformed.Consequently, the elastic member 107 is elastically deformed, wherebythe load applied to the fastening portion 111 can be reducedconveniently.

The stay 108 extends rearward and upward from the elastic member 107.The coupling portion 109 is located more rearward and higher than theelastic member 107. Consequently, the elastic member 107 is elasticallydeformed, whereby the coupling portion 109 is movable easily downwardrelative to the seat 31. If the seat 31 is moved upward relative to therear fender 71, the elastic member 107 is elastically deformed, wherebythe coupling portion 109 is moved downward relative to the seat 31.Accordingly, the load applied to the fastening portion 111 can besuppressed effectively.

The straddled vehicle 1 includes the holder 102. The holder 102 issupported by the seat 31. The holder 102 holds the elastic member 107.Thus, the seat 31 can support the elastic member 107 conveniently viathe holder 102. Moreover, the elastic member 107 is elasticallydeformed, whereby the load applied to holder 102 can be reducedconveniently.

The holder 102 includes a fastening portion 103. The elastic member 107is elastically deformed, whereby the load applied to the fasteningportion 103 can be reduced conveniently. Thus, the fastening portion 103can be reduced in size easily. For example, a nominal diameter of thefastening portion 103 can be reduced easily.

The elastic member 107 has a tube shape. The elastic member 107 includesthe through hole 107 a. The holder 102 is inserted into the through hole107 a of the elastic member 107. Thus, the holder 102 can support theelastic member 107 conveniently.

The elastic member 107 includes the outer circumferential face 107 b.The stay 108 is connected to the outer circumferential face 107 b of theelastic member 107. Thus, the elastic member 107 can support the stay108 conveniently. Moreover, the elastic member 107 is elasticallydeformed, whereby the stay 108 is easily movable relative to the elasticmember 107.

The fastening portion 111 includes the nut 112 and the bolt 113. The nut112 is fixed to the rear fender 71. The bolt 113 is coupled with the nut112. The coupling portion 109 includes the seating portion 109 a and thethrough hole 109 b. The seating portion 109 a has a plate shape. Thethrough hole 109 b is formed in the seating portion 109 a. Thereby, thefastening portion 111 can conveniently fix the coupling portion 109 tothe rear fender 71.

The bolt 113 includes the screw 113 a, the shaft 113 b, the head 113 c,and the washer 113 d. The screw 113 a is coupled with the nut 112. Theshaft 113 b is connected to the screw 113 a. The head 113 c is connectedto the shaft 113 b. The washer 113 d is attached to the shaft 113 b. Thewasher 113 d is movable between the screw 113 a and the head 113 c. Theshaft 113 b is inserted in the through hole 109 b. The seating portion109 a is located between the head 113 c and the washer 113 d. When thescrew 113 a is joined with the nut 112, the head 113 c presses theseating portion 109 a and the washer 113 d against the nut 112. Thus,the fastening portion 111 can fix the coupling portion 109 to the rearfender 71 more conveniently.

The screw 113 a has the outer diameter larger than the through hole ofthe washer 113 d. This can conveniently prevent removal of the washer113 d from the shaft 113 b. That is, the washer 113 d is constantlyattached to the shaft 113 b. Thereby, the bolt 113 is attachable anddetachable to and from the nut 112 easily. As a result, the fasteningportion 111 can attach and detach the coupling portion 109 to and fromthe rear fender 71 easily.

The seating portion 109 a is located between the head 113 c and thewasher 113 d. Consequently, the shaft 113 b is not removed from thethrough hole 109 b even when the bolt 113 moves in the direction of theaxis of the bolt 113 in such a state where the shaft 113 b is insertedinto the through hole 109 b of the coupling portion 109. Specifically,the shaft 113 b is immovable from inside of the through hole 109 b tooutside of the through hole 109 b even when the bolt 113 moves in thedirection of the axis of the bolt 113. Consequently, the bolt 113 isundetachable from the coupling portion 109 even when the bolt 113 movesin the direction of the axis of the bolt 113. As a result, the fasteningportion 111 can attach and detach the coupling portion 109 to and fromthe rear fender 71 easily.

The through hole 109 b of the coupling portion 109 is a cutout hole.Accordingly, the shaft 113 b is easily insertable into the through hole109 b of the coupling portion 109 while the washer 113 d is attached tothe shaft 113 b. Moreover, the shaft 113 b is easily detachable from thethrough hole 109 b of the coupling portion 109 while the washer 113 d isattached to the shaft 113 b.

The through hole 109 b of the coupling portion 109 is a long hole.Accordingly, the shaft 113 b is insertable into the through hole 109 bof the coupling portion 109 even when at least one of the seat 31, therear fender 71, and the position regulator 101 contains a dimensionalerror. Consequently, the fastening portion 111 can fasten the couplingportion 109 to the rear fender 71 even when at least one of the seat 31,the rear fender 71, and the position regulator 101 contains adimensional error.

The fastening portion 111 is located below the seat 31. The head 113 cis located above the nut 112. The seat 31 includes the through hole 42.The through hole 42 is located above the head 113 c. Consequently, thehead 113 c of the bolt 113 is easily accessible via the through hole 42of the seat 31. Thereby, the bolt 113 is attachable and detachable toand from the nut 112 easily. As a result, the fastening portion 111 canattach and detach the coupling portion 109 to and from the rear fender71 easily.

The through hole 42 of the seat 31 has the inner diameter larger thanthe outer diameter of the head 113 c. Consequently, the head 113 c iseasily accessible.

At least part of the head 113 c is located inside of the through hole 42of the seat 31. Consequently, the head 113 c is accessible more easily.

The through hole 42 of the seat 31 restricts an area where the head 113c is movable in the substantially horizontal direction. Specifically,the through hole 42 of the seat 31 restricts the area where the head 113c is movable in the substantially horizontal direction within the insideof the through hole 42 of the seat 31. Strictly speaking, when at leastpart of the head 113 c is located inside of the through hole 42, thethrough hole 42 restricts the area where the head 113 c is movable inthe substantially horizontal direction within the inside of the throughhole 42. Since the through hole 42 restricts the area where the head 113c is movable in the substantially horizontal direction, the through hole42 restricts detachment of the shaft 113 b from the through hole 109 bof the coupling portion 109. This can conveniently prevent detachment ofthe bolt 113 from the coupling portion 109. As a result, the fasteningportion 111 can attach and detach the coupling portion 109 to and fromthe rear fender 71 easily.

The bolt 113 includes a distal end 113 e. The distal end 113 e isconnected to the screw 113 a. The distal end 113 e has the outerdiameter smaller than the outer diameter of the screw 113 a. The distalend 113 e guides the screw 113 a to the nut 112. Thus, the screw 113 ais insertable into the nut 112 easily. Thereby, the bolt 113 isattachable and detachable to and from the nut 112 more easily. Forexample, the bolt 113 is attachable and detachable to and from the nut112 easily even when the nut 112 is invisible.

This invention is not limited to the foregoing embodiment, but may bemodified as follows:

(1) In this embodiment, the horizontal position determining portion 37of the seat 31 includes the right position determining portion 37 a, theleft position determining portion 37 b, the front position determiningportion 37 c, and the rear position determining portion 37 d. Thehorizontal position determining portion 19 of the cross member 8includes the right position determining portion 19 a, the left positiondetermining portion 19 b, the front position determining portion 19 c,and the rear position determining portion 19 d. However, the inventionis not limited to this. For example, one of the horizontal positiondetermining portion 37 and the horizontal position determining portion19 may include a shaft extending in the up-down direction Z and theother of the horizontal position determining portion 37 and thehorizontal position determining portion 19 may be a tube having an innercircumferential face contacting an outer circumferential face of theshaft. Also in such a modification, the horizontal position determiningportion 37 can conveniently restrict movement of the seat 31 in thesubstantially horizontal direction relative to the cross member 8.

(2) In this embodiment, the seat 31, the right side cover 61R, and therear fender 71 each form part of the circumferential portion of theright inlet port 83R. However, the invention is not limited to this. Forexample, any two selected from the seat 31, the right side cover 61R,and the rear fender 71 may form part of the circumferential portion ofthe right inlet port 83R. That is, one selected from the seat 31, theright side cover 61R, and the rear fender 71 may not form part of thecircumferential portion of the right inlet port 83R. For example, eachof the right side cover 61R and the rear fender 71 may form part of thecircumferential portion of the right inlet port 83R. In other words, thecircumferential portion of the right inlet port 83R may be formed withonly the right side cover 61R and the rear fender 71.

(3) In this embodiment described above, the seat 31, the left side cover61L, and the rear fender 71 each form part of the circumferentialportion of the left inlet port 83L. However, the invention is notlimited to this. For example, any two selected from the seat 31, theleft side cover 61L, and the rear fender 71 may form part of thecircumferential portion of the left inlet port 83L. That is, oneselected from the seat 31, the left side cover 61L, and the rear fender71 may not form part of the circumferential portion of the left inletport 83L. For example, each of the left side cover 61L and the rearfender 71 may form part of the circumferential portion of the left inletport 83L. In other words, the circumferential portion of the left inletport 83L may be formed with only the left side cover 61L and the rearfender 71.

(4) In this embodiment, the fastening portion 93 fastens the right sidecover 61R to the rear fender 71. However, the invention is not limitedto this. For example, the fastening portion 93 may fasten the right sidecover 61R to the right seat frame 6R.

(5) In this embodiment, the fastening portion 91 fastens the left sidecover 61L to the rear fender 71. However, the invention is not limitedto this. For example, the fastening portion 91 may fasten the left sidecover 61L to the left seat frame 6L.

(6) In this embodiment, the fastening portion 91 is located at aposition not overlapping the right inlet port 83R or the left inlet port83L in the rear view of the vehicle and outside of the intake passage81. However, the invention is not limited to this. The fastening portion91 may be located at least either a position not overlapping the rightinlet port 83R or the left inlet port 83L in the rear view of thevehicle or at a position outside of the intake passage 81. For example,the fastening portion 91 may be located at a position not overlappingthe right inlet port 83R or the left inlet port 83L in the rear view ofthe vehicle and inside of the intake passage 81. For example, thefastening portion 91 may be located at a position overlapping the rightinlet port 83R and the left inlet port 83L in the rear view of thevehicle and outside of the intake passage 81.

(7) In this embodiment, the fastening portion 93 is located at aposition not overlapping the right inlet port 83R or the left inlet port83L in the rear view of the vehicle and inside of the intake passage 81.However, the invention is not limited to this. The fastening portion 93may be located at least either a position not overlapping the rightinlet port 83R or the left inlet port 83L in the rear view of thevehicle or at a position outside of the intake passage 81. For example,the fastening portion 93 may be located at a position not overlappingthe right inlet port 83R and the left inlet port 83L in the rear view ofthe vehicle and outside of the intake passage 81. For example, thefastening portion 93 may be located at a position overlapping the rightinlet port 83R and the left inlet port 83L in the rear view of thevehicle and outside of the intake passage 81.

(8) In this embodiment, the position regulator 101 joins the seat 31with the rear fender 71. However, the invention is not limited to this.For example, the position regulator 101 may join the seat 31 with thebody frame 2. The body frame 2 joined with the seat 31 by the positionregulator 101 is at least one of the right seat frame 6R, the left seatframe 6L, and the cross member 8, for example. For example, the bodyframe 2 may include a frame member connected with at least one of theright seat frame 6R, the left seat frame 6L, and the cross member 8, andthe position regulator 101 may join the frame member with the seat 31.

(9) In this embodiment, the position regulator 101 includes the couplingportion 109 and the fastening portion 111. However, the invention is notlimited to this. For example, the position regulator 101 does not needto include any of the coupling portion 109 and the fastening portion111. For example, the position regulator 101 may include a hook and abar contacting the hook. For example, the seat 31 may include one of thehook and the bar, and the rear fender 71 or the body frame 2 may includethe other of the hook and the bar. It is preferred that one of the hookand the bar is located below the other of the hook and the bar and oneof the hook and the bar contacts the other of the hook and the bar. Alsoin such a modification, the position regulator 101 can convenientlyregulate movement of the seat 31 relative to either the rear fender 71or the body frame 2. Especially, the position regulator 101 canconveniently regulate upward movement of the seat 31 relative to eitherthe rear fender 71 or the body frame 2.

(10) In this embodiment, the position regulator 101 includes the holder102. However, the invention is not limited to this. For example, theholder 102 is omittable. For example, the seat 31 may directly supportthe elastic member 107.

(11) In this embodiment, the position regulator 101 includes the stay108. However, the invention is not limited to this. For example, thestay 108 is omittable. For example, the elastic member 107 may directlysupport the coupling portion 109.

(12) In this embodiment, the elastic member 107 has a tube shape.However, the invention is not limited to this. For example, the elasticmember 107 may have a plate shape. The elastic member 107 may have ashape extending in the longitudinal direction X.

(13) In this embodiment, a grommet or a bushing is exemplarily describedas the elastic member 107. However, the invention is not limited tothis. For example, the elastic member 107 may be a spring.

(14) In this embodiment, the long side direction of the through hole 109b of the coupling portion 109 is substantially parallel to thelongitudinal direction X. However, the invention is not limited to this.The long side direction of the through hole 109 b may be changed asappropriate to a direction except the longitudinal direction X.

(15) In this embodiment, the right guide wall 121R includes, in additionto the part located more leftward than the right inlet port 83R, thepart located more rightward than the left end of the right inlet port83R. However, the invention is not limited to this. For example, theentire of the right guide wall 121R may be located more leftward thanthe right inlet port 83R. For example, at least part of the right guidewall 121R may be located more leftward than the right inlet port 83R.

(16) In this embodiment, the left guide wall 121L includes, in additionto the part located more rightward than the left inlet port 83L, thepart located more leftward than the right end of the left inlet port83L. However, the invention is not limited to this. For example, theentire of the left guide wall 121L may be located more rightward thanthe left inlet port 83L. For example, at least part of the left guidewall 121L may be located more rightward than the left inlet port 83L.

(17) In this embodiment, part of the right guide wall 121R (e.g., theintermediate part 123R) contacts the seat 31 and the rear fender 71.However, the invention is not limited to this. For example, the entireof the right guide wall 121R may contact the seat 31 and the rear fender71.

(18) In this embodiment, part of the left guide wall 121L (specifically,the intermediate part 123L) contacts the seat 31 and the rear fender 71.However, the invention is not limited to this. For example, the entireof the left guide wall 121L may contact the seat 31 and the rear fender71.

(19) In this embodiment, the right guide wall 121R, the left guide wall121L, the second fin 127, the right blocking wall 129R, and the leftblocking wall 129L are attached to the seat 31. However, the inventionis not limited to this. For example, at least one of the right guidewall 121R, the left guide wall 121L, the second fin 127, the rightblocking wall 129R, and the left blocking wall 129L may be attached toeither the rear fender 71 or the body frame 2.

(20) In this embodiment, the right projection portion 125R, the leftprojection portion 125L, and the first fin 126 are attached to the rearfender 71. However, the invention is not limited to this. For example,at least one of the right projection portion 125R, the left projectionportion 125L, and the first fin 126 may be attached to either the seat31 or the body frame 2.

(21) In this embodiment, the left blocking wall 129L overlaps part ofthe boundary K between the seat 31 and the left side cover 61L in theside view of the vehicle. However, the invention is not limited to this.For example, the left blocking wall 129L may overlap the entire of theboundary K in the side view of the vehicle. For example, the leftblocking wall 129L may overlap at least part of the boundary K in theside view of the vehicle.

(22) In this embodiment, the right blocking wall 129R overlaps part ofthe boundary between the seat 31 and the right side cover 61R in theside view of the vehicle. However, the invention is not limited to this.For example, the right blocking wall 129R may overlap the entire of theboundary between the seat 31 and the right side cover 61R in the sideview of the vehicle. For example, the right blocking wall 129R mayoverlap at least part of the boundary between the seat 31 and the rightside cover 61R in the side view of the vehicle.

(23) In this embodiment, the straddled vehicle 1 has been illustrated asan example of off-road type vehicles. However, the invention is notlimited to this. The straddled vehicle 1 may be changed to vehicles ofother types, such as the street type, the sport type or a vehicle forirregular grounds (ALL-TERRAIN VEHICLE).

(24) In the foregoing embodiment, the number of front wheel 22 includedin the straddled vehicle 1 is one. The invention is not limited to this.The number of front wheels 22 included in the straddled vehicle 1 may betwo. In the foregoing embodiment, the number of rear wheel 28 includedin the straddled vehicle 1 is one. The invention is not limited to this.The number of rear wheels 28 included in the straddled vehicle 1 may betwo.

(25) In the foregoing embodiment, the straddled vehicle 1 includes theengine (internal combustion engine) 24 as a power source. However, theinvention is not limited to this. For example, the straddled vehicle 1may have an electric motor as another power source in addition to theengine 24. For example, the straddled vehicle 1 may have an electricmotor as a power source instead of the engine 24.

(26) The foregoing embodiment and each of the modified embodimentsdescribed in paragraphs (1) to (25) above may be further varied asappropriate by replacing or combining their constructions with theconstructions of the other modified embodiments.

The present invention may be embodied in other specific forms withoutdeparting from the spirit or essential attributes thereof and,accordingly, reference should be made to the appended claims, ratherthan to the foregoing specification, as indicating the scope of theinvention.

1. A straddled vehicle, comprising: a body frame including a right seatframe located rightward of a vehicle center plane with respect to arear-to-front direction of the vehicle, the vehicle center plane passingthrough a center of the vehicle and being perpendicular to a transversedirection of the vehicle, a left seat frame located leftward of thevehicle center plane with respect to the rear-to-front direction of thevehicle, and a cross member located between the right seat frame and theleft seat frame, and configured to connect the right seat frame with theleft seat frame; a seat located above the right seat frame, the leftseat frame, and the cross member; a right side cover located rightwardof the right seat frame; a left side cover located leftward of the leftseat frame; a rear fender, a part of which is located below the rightseat frame, the left seat frame, and the cross member; an intake passageformed below the seat, leftward of the right side cover, rightward ofthe left side cover, and above the rear fender, the intake passageextending in a longitudinal direction of the vehicle; an air cleanerlocated in a front part of the intake passage; a left inlet port locatedin a rear part of the intake passage and leftward of the vehicle centerplane, the left inlet port opening rearward, and communicating with theintake passage and an outside of the vehicle; a right inlet port locatedin the rear part of the intake passage and rightward of the vehiclecenter plane, the right inlet port opening rearward, and communicatingwith the intake passage and the outside of the vehicle; a firstfastening portion configured to fasten the right side cover to eitherthe right seat frame or the rear fender; and a second fastening portionconfigured to fasten the left side cover to either the left seat frameor the rear fender, wherein the cross member is located more rearwardthan the air cleaner and more forward than the right inlet port and theleft inlet port, the cross member is convex upward in a rear view of thevehicle, the cross member does not overlap the right inlet port or theleft inlet port in the rear view of the vehicle, the first fasteningportion is located outside the intake passage, or is located inside theintake passage but does not overlap the right inlet port or the leftinlet port in the rear view of the vehicle, and the second fasteningportion is located outside the intake passage, or is located inside theintake passage but does not overlap the right inlet port or the leftinlet port in the rear view of the vehicle.
 2. The straddled vehicleaccording to claim 1, wherein an area of the cross member in the rearview of the vehicle is smaller than an area of the cross member in aplan view of the vehicle.
 3. The straddled vehicle according to claim 1,wherein the cross member contacts the seat at a position higher than theright seat frame and the left seat frame.
 4. The straddled vehicleaccording to claim 1, wherein the cross member includes a right holeextending in the longitudinal direction of the vehicle, and a left holeextending in the longitudinal direction of the vehicle.
 5. The straddledvehicle according to claim 4, wherein the cross member includes a rightpart connected to the right seat frame and extending upward, a left partconnected to the left seat frame and extending upward, an upper partextending from the right part to the left part at a position higher thanthe right seat frame and the left seat frame, a right reinforcementportion located more leftward than the right part and configured toconnect the right seat frame with the upper part, and a leftreinforcement portion located more rightward than the left part andconfigured to connect the left seat frame with the upper part, whereinthe right hole is formed by the right part, the upper part, and theright reinforcement portion, and the left hole is formed by the leftpart, the upper part, and the left reinforcement portion.
 6. Thestraddled vehicle according to claim 5, wherein the right reinforcementportion is further connected with the right part, and the leftreinforcement portion is further connected with the left part.
 7. Thestraddled vehicle according to claim 1, wherein the rear fender has anupper edge that is convex upward in a first cross section, the firstcross section passing through the cross member and being perpendicularto the longitudinal direction of the vehicle, and a part of the upperedge of the rear fender is located at a position higher than a loweredge of the right seat frame and a lower edge of the left seat frame inthe first cross section.
 8. The straddled vehicle according to claim 1,further comprising: a right guide wall located inside the intake passageand rightward of the vehicle center plane with respect to therear-to-front direction of the vehicle, and a left guide wall locatedinside the intake passage and leftward of the vehicle center plane withrespect to the rear-to-front direction of the vehicle, wherein at leasta part of the right guide wall is located more leftward than the rightinlet port, the right guide wall extends forward and leftward in a planview of the vehicle, at least a part of the left guide wall is locatedmore rightward than the left inlet port, and the left guide wall extendsforward and rightward in the plan view of the vehicle.
 9. The straddledvehicle according to claim 8, wherein a front part of the right guidewall is connected to a front part of the left guide wall.
 10. Thestraddled vehicle according to claim 8, wherein at least another part ofthe right guide wall contacts the seat and the rear fender, and at leastanother part of the left guide wall contacts the seat and the rearfender.
 11. The straddled vehicle according to claim 8, furthercomprising: a position regulator configured to join the seat with eitherthe body frame or the rear fender to regulate movement of the seatrelative to the body frame or the rear fender, wherein the positionregulator is located leftward of the right guide wall in the plan viewof the vehicle, the right guide wall extends from a position rightwardof the position regulator to a position forward of the positionregulator, the position regulator is located rightward of the left guidewall in the plan view of the vehicle, and the left guide wall extendsfrom a position leftward of the position regulator to a position forwardof the position regulator.
 12. The straddled vehicle according to claim11, wherein the position regulator does not overlap the right inlet portor the left inlet port in the rear view of the vehicle.
 13. Thestraddled vehicle according to claim 8, further comprising a fin locatedinside the intake passage, wherein the fin is located more forward thanthe right guide wall and the left guide wall, the fin is located moreleftward than the right inlet port and more rightward than the leftinlet port, and the fin extends in the longitudinal direction of thevehicle in the plan view of the vehicle.
 14. The straddled vehicleaccording to claim 13, wherein the seat includes a guide slopeconfigured to contact an upper part of the intake passage, wherein theguide slope is located more forward than the fin, the guide slope islocated above the air cleaner, and the guide slope is inclined forwardand downward.
 15. The straddled vehicle according to claim 1, furthercomprising: a right blocking wall located inside the intake passage andrightward of the vehicle center plane with respect to the rear-to-frontdirection of the vehicle, and a left blocking wall located inside theintake passage and leftward of the vehicle center plane with respect tothe rear-to-front direction of the vehicle, wherein the right blockingwall is located more forward than the right inlet port, the rightblocking wall overlaps at least a part of a boundary between the seatand the right side cover in a side view of the vehicle, the leftblocking wall is located more forward than the left inlet port, and theleft blocking wall overlaps at least a part of a boundary between theseat and the left side cover in the side view of the vehicle.